(e) If the mask is not regular throughout the sector of fire, the gunner determines the minimum mask clearance as described above. b. The leg-locking handwheel must then be tightened by hand, ensuring the teeth on either side are correctly meshed. He places firing data on the sight and lays the mortar for deflection and elevation. With the mortar mounted and the sight installed, the gunner lays the sight on the two aiming posts (placed out 50 and 100 meters from the mortar) on a referred deflection of 2800 mils and an elevation of 1100 mils. It is light enough to be portable when broken down into. During firing, the breech plug on the barrel is sealed and locked to the rotatable socket in the baseplate. Tabulated data. End this starting train with not less than 1 meter of inert material (dry grass, leaves, or newspapers). It is set using the bladed end of the M18 fuze wrench. .50: AP, M2 AND CARTRIDGE, CAL. Designed by Thingsym. 81MM M252A1. Fuzes are not disassembled. The cartridge is dropped down the barrel, fin-end first. Attached to the right of the screw is the traversing handwheel. c. Crest Clearance. Referring and realigning aiming posts ensure that all mortars are set on the same data. Short cartridges can be expected when firing below charge 4. It is designed to be fired in the indirect fire mode, cannot be fired handheld, and norm ally utilizes a FDC. d. The first ammunition bearer stands to the right rear of the mortar. The mortar is within two turns of center of traverse. It can provide all-weather, ground-based, close supporting, accurate, immediately If required, the gunner/assistant gunner lowers the barrel so that the breech plug engages with the open end of the socket, and he uses the barrel as a lever to move the socket. It uses the M772 mechanical time fuze and weighs about 10.6 pounds. f. Ammunition should be stored under cover. The tabulated data of the 81-mm mortar, M252, are shown in Table 4-1. The traversing screw assembly is fitted to the clamp assembly, which is pivoted in the center on an arm attached to the elevating leg. However, at temperatures above 32 degrees Fahrenheit and at angles greater than 1068 mils, the flight time is sufficient to permit arming. An internal clock mechanism provides nine seconds of safe air travel (610 to 2,340 meters along trajectory for charge 0 through 9, respectively). A securing strap is attached to the plain leg for securing the bipod in the folded position. How the RCGM works: Target coordinates are programed into the RCGM using a portable GPS setter. ) or https:// means youve safely connected to the .gov website. A lock ( The mortar is then re-laid on the aiming posts using the traversing crank. The M29 would become the standard American mortar in the upcoming Vietnam War. It can be fitted with either the M567, M524, or M532-series fuzes. d. Multioption. They should not be approached for 5 minutes or disturbed for at least 30 minutes after firing. The first ammunition bearer holds the barrel until the assistant gunner has removed the mount. The gunner can depress the barrel, if necessary, to provide easier access to the firing pin. The 81mm weapons platoon consisted of the headquarters platoon and four mortar squads. b. Figure 4-8. This ensures a maximum traversing and elevating capability after making the movement. (8) To help minimize the occurrence of short rounds and or duds, unpackaged ammunition that has been dropped should not be fired. The M252 81mm Medium Extended Range Mortar is a crew-served, medium weight mortar which is highly accurate and provides for a greater range (4,500 meters to 5,650 meters) and lethality than the . The mortar is within two turns of center of traverse. In charge was the platoon commander - normally a lieutenant. Range Minimum to maximum 83 to 5,608 meters Rate of Fire . If not, the cartridge is placed on its side, and the closing plug is removed using an M18 fuze wrench. The fuze contains a delayed arming feature that ensures the fuze remains unarmed and detonator safe for a minimum of 1.25 seconds of flight. Training practice is used only for training. g. The barrel clamps can be moved along the barrel to counter large changes in elevation. The equipment is placed out the same as for the gunner's examination (Chapter 9). Long Range PGK. c. After the gunner has announced, "Up," the squad leader should check the mortar to determine if the exercise was performed correctly. Each round is stenciled with the ammunition lot number, type of round, type of filler, and caliber. There must not be a visible gap between the fuze and cartridge body. Ammunition is typed according to use (Table 4-2). Bear in mind that these are my personal opinions, experiences, and . Then it is removed from the bipod and laid horizontally on the ground at the dud pit until it can be turned over to ordnance personnel. (2) The M84 fuze is a single-purpose, powder-train, mechanical-time fuze used with the 81-mm M301A1 and M301A2 illuminating cartridges. The fuze setter, M25, sets M84-series time fuzes. .50: BALL, M2 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR WEAPON, 5.56MM, M16A1 WEAPON, 5.56MM, M16A2 WEAPON, 5.56MM, M249 AND WEAPON, 5.56MM, M4 FIRING CARTRIDGE, BALL, M855 CARTRIDGE, TRACER, M858 CARTRIDGE, BALL, M193 CARTRIDGE, TRACER, M196 (S&I BY PROP SEE DETAILS, FOOTNOTES), MACHINE GUN, 7.62-MM: M60 ON MOUNT, MACHINE GUN: 7.62-MM, M122 AND MACHINE GUN, 7.62-MM: M73 ON TANK, COMBAT, FULL-TRACKED: 105-MM GUN, M60 SERIES AND RIFLE, 7.62-MM: M14; FIRING CARTRIDGE, 7.62-MM, BALL, NATO, M59; CARTRIDGE, 7.62-MM, BALL, NATO, M80; CARTRIDGE, 7.62-MM: AP, NATO, M61 AND CARTRIDGE, 7.62-MM: TRACER, NATO, M62 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 8-Q-1 FOR PROJECTILE, HE, M404 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 8-J-4 FOR PROJECTILE, HE, M404 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 8-T-1 FOR PROJECTILE, HE: M509A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER, M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED, 8-INCH, M110A2 FOR LOW ANGLE FIRING PROJECTILE, HE, M509A1 USING REGISTRATION DATA FOR PROJECTILE, HE, M106 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER: M2 AND M2A1 ON HOWITZER, HEAVY, TOWED: 8-INCH, M115; CANNON, 8-INCH HOWITZER: M47 ON HOWITZER, HEAVY, SELF-PROPELLED, FULL TRACKED: 8-INCH, M55; CANNON, 8-INCH HOWITZER: M2A1E1 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110; FIRING PROJECTILE, HE: M106 AND PROJECTILE, CHEMICAL: M426 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER, M201 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110A1 AND CANNON, 8-INCH HOWITZER, M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110A2 AND FIRING PROJECTILE, HE, M106 PROJECTILE, CHEMICAL, M426 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER: M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED, 8-INCH, M110A2; FIRING PROJECTILE, HE, RA; M650 AND PROJECTILE, ATOMIC: M753 AND M753A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 8-INCH HOWITZER, M201A1 ON HOWITZER, HEAVY, SELF-PROPELLED: 8-INCH, M110A2 FIRING PROJECTILE, HE, M509A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 14.5-MM GUN, M31; ARTILLERY TRAINER FIRING FUZED CARTRIDGES, M181, M182 AND M183 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 20-MM, AUTOMATIC, M139; FIRING CARTRIDGE, 20-MM, HEIT, M599; CARTRIDGE, 20-MM, TPT, M206 AND CARTRIDGE, 20-MM, APIT, M601 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 25MM GUN, M242 ON INFANTRY FIGHTING VEHICLE, M3 FIRING CARTRIDGE, APDS-T, M791 CARTRIDGE, HEI-T, M792 CARTRIDGE, TP-T, M793 CARTRIDGE, TPDS-T, M910 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, AUTOMATIC, 40-MM, M1 AND GUN, DUAL AUTOMATIC, 40-MM, M2; FIRING CARTRIDGE, HE-T, SD, MK 2 WITH FUZES, PD, MK 27, M64A1, M71 OR NO. The settings are obtained from the range tables and are applied using a wrench (number 9239539) or a 1 3/4-turn open-end wrench. The M821A2/821A1/889A1 consists of the following major components: M935 Point Detonating Fuze or M734/734A1 Multi-Option Fuze. If water is not available, the gunner must stand clear of the mortar until the barrel is cool. Ammunition is made and packed to withstand all conditions ordinarily encountered in the field. If the round fires, the mortar is re-laid on the aiming point and firing is continued. Firing tables are used to determine the correct charge for firing. The propellant increments are ignited, which produce rapidly expanding gases that force the cartridge from the barrel. (1) The rotating socket is free to move in a complete circle. Tabular Firing Tables TFT ORDER FORM 1.Select "Mortar" 2.Select which mortar caliber 3.Select mortar system nomenclature 4.Select which TFTs to order 5.Put in quantity and click "Add TFTs" 6.Click "Next" TFT JUSTIFICATION 1.Put in TFT Ordering Justification 2.Click "Next" SHIPPING INFORMATION 1.Fill out all required fields An ammunition lot number is assigned to each ammunition lot, which is marked on each cartridge and packing container. (See FM 7-90 for a discussion of the duties of the platoon headquarters.). It arms within a maximum of 2.50 seconds. e. Dummy. (4) The M567 fuze is an impact fuze that has a SQ/IMP or D function. Close approach to crests, trees, towers, large buildings, parked aircraft, mechanized equipment, and similar irregularities causes functioning at heights greater than average level. The contents of ammunition containers are shown by markings. Mount, M177, in folded position. The safety/packing clip should be removed when the cartridge is unpacked. One-quarter turn on the adjusting nut equals one turn of the traversing handwheel. The round has a burst height of 600 meters and provides illumination for about 60 seconds for an area of about 1,200 meters. The gunner moves the mortar as the assistant gunner steadies it. He positions the lower barrel clamp against the lower stop band on the barrel and secures the upper barrel clamp. 81mm 120mm 60mm . Check the post SOP before applying the following procedure: (1) Select a place at least 100 meters from the mortar position, parked vehicles, and ammunition piles. Following the arm-and-hand signals of the gunner (who is looking through the sight unit), he moves the far aiming post so that the gunner obtains an aligned sight picture. This action breaks an internal sheet pin and internal wire, thereby disabling the proximity function. The sight is laid on two aiming posts (placed out 50 and 100 meters from the mortar) on a referred deflection of 2800 mils and an elevation of 1100 mils. The M889 HE cartridge (M252 onlyXUS Marine Corps) is of the same construction as the M821 cartridge in every detail except the fuze, which is the M935. Fort Belvoir, VA 22060 To make the shift, the gunner places the fingers of his right hand in the muzzle and his left hand on the left leg. A safety latch located at the side of the recess is used to secure the ball. The assistant gunner carries the bipod to the front of the barrel and places the bipod feet on the ground 12 to 15 inches in front of the baseplate and astride the line of fire. The squad leader points to the exact spot where the mortar is to be mounted. The gunner is given a deflection change between 5 and 25 mils, either increasing or decreasing from the last stated deflection, and the command to refer and realign aiming posts. The American M1 81mm Mortar, like the upcoming M2 60mm Mortar, was based on a French design by Edgar William Brandt (1880-1960). He indicates the initial direction of fire by pointing in that direction and commands ACTION. He uses the chain of command to assist him in effecting his command and supervising duties. (4) Extra increments are removed if the cartridge is to be fired with less than full charge. c. The first ammunition bearer checks the barrel and ensures that--. The barrel clamps are then closed. The ignition cartridge strikes the firing pin and detonates, which causes a flash that passes through the radial holes in the shaft. (3) The M256-series fuze has an SQ/IMP function only. a. It engages the 1 3/4-inch flats on the setting ring or the fuze head. Cartridges assembled with the M532 fuze must be fired above charge 0. Examples are: The platoon leader commands the platoon and supervises the training of the elements. c. The assistant gunner lifts the bipod and stands it on its elevating leg so that the elevating handwheel is to the rear and the plain leg is to the front. 81-mm MORTAR, M252 The 81-mm mortar, M252, delivers timely, accurate fires to meet the . He must not stand directly behind the mortar. Theme by TechDoc. c. The first ammunition bearer ensures that each cartridge is clean, the safety pin is present, and the ignition cartridge is in good condition. Cartridges assembled with the M524 (A1, A2, A3, or A4) fuze are for use by the U.S. Marine Corps and U.S. Navy only. Several types of HE ammunition are used in the 81-mm mortar, M252. This section contains information on how to prepare the 81-mm mortar, M252, for firing, how to conduct safety checks, and, if a misfire should occur during firing, what actions the crew applies to remove the cartridge from the barrel. If the situation allows for a longer waiting period, the dud can be considered safe for handling after 40 hours. The powder increments, mainly, should not be exposed to direct sunlight. It has a time setting of up to 25 seconds. It uses the M185 propelling charge that consists of eight increments fitted into the spaces between the fins and held by a propellant holder. The cartridges are painted olive drab with yellow markings. The mortar squad consists of five men (Figure 4-1). e. The gunner centers the elevation bubble. 251 MK 1 AND CARTRIDGE, AP-T, M81 AND M81A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 57-MM, M18, M18A1 AND T15E16; FIRING CARTRIDGE, HE, M306A1 AND CARTRIDGE, TP, M306A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 57-MM, M18, M18A1 AND T15E16, FIRING CARTRIDGE, HE, AT, M307A1, MUZZLE/VELOCITY, 1200 F/S (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60MM, M224 FIRING CARTRIDGE, HE, M720 CARTRIDGE, HE, M720A1 CARTRIDGE, HE, M49A4 CARTRIDGE, HE, M888 CARTRIDGE, HE, M768 CARTRIDGE, HE, XM1046 CARTRIDGE, HE, M1061 CARTRIDGE, WP, M50A3 CARTRIDGE, WP, M302A2 AND M302A1 CARTRIDGE, WP, M722 CARTRIDGE, WP, M722A1 CARTRIDGE, ILLUM, M83A3 CARTRIDGE, ILLUM, M721 CARTRIDGE, IR, M767 CARTRIDGE, FRPC, M769 CARTRIDGE, TP (SR), M766 (S&I BY PROP SEE DETAILS, FOOTNOTES) (REPRINTED W/BASIC INCL C1), FIRING TABLES FOR MORTAR, 60MM: M224 MORTAR, 60MM: M224A1 FIRING CARTRIDGE, HE, M720A1 CARTRIDGE, HE, M768 CARTRIDGE, HE, M720 CARTRIDGE, HE, M720A2 CARTRIDGE, HE, M768A1 CARTRIDGE, WP, M722 CARTRIDGE, WP, M722A1 CARTRIDGE, HE, M888 CARTRIDGE, HE, M49A4 CARTRIDGE, TP, M50A3 CARTRIDGE, HE, M1061 CARTRIDGE, HE, XM1046 CARTRIDGE, WP, M302A1 CARTRIDGE, WP, M302A2 CARTRIDGE, ILLUM, M721 CARTRIDGE, ILLUM, M83A3 CARTRIDGE, IR ILLUM, M767 CARTRIDGE, TP(SR), M766 CARTRIDGE, FRPC, M769 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60-MM, M224; FIRING CARTRIDGE, HE, M888 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60MM, M224, FIRING CARTRIDGE, HE, M888 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 60 MM, M224 FIRING CARTRIDGE, HE M488 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE: 75-MM, M20 (T25); FIRING CARTRIDGE, PHE, M310 AND M310A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 76-MM, M32 ON TANKS, 75-MM GUN, M41 AND M41A1 AND GUN, 76-MM, M48 (T124E2) ON CARRIAGE, 76-MM, M29 (T66) FIRING SHOT, AP-T, M339 SHOT, TP-T, M340 SHOT, HVAPDS-T, M331A1 AND M331A2 SHOT, HVAP, T66E4 SHELL, HE, M352 SHELL, WP, M361 (T140E2) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1, M29 AND M1; FIRING CARTRIDGE, HE, M362 CARTRIDGE, HE, M43A1 AND TP, M43A1 CARTRIDGE, WP, M57 AND M57A1 CARTRIDGE, ILLUMINATING, M301A1 AND M301A2 CARTRIDGE, ILLUMINATING, M301A3 (REPRINTED W/BASIC INCL C1-7) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR 81-MM: M29 AND M2 FIRING CARTRIDGE, HE, M43A1 WITH FUZE, PD, M525 FUZE, PD, M52A2E3 (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR: 81-MM, M29 AND M1 ON MOUNTS, MORTAR: 81-MM, M23A2, M23A1, M23, M4 AND M1; FIRING SHELL, HE: M43A1 AND M43A1B1; SHELL, TP: M43A1 AND M43A1B1 WITH FUZE, PD: M52B10; FIN, M3; CARTRIDGE, IGNITION: M8; PRIMER, PERCUSSION: M34 AND INCREMENT, PROPELLANT: M1A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29; MORTAR, 81-MM, SELF-PROPELLED: M125A1 AND M125; CARRIER, 81-MM MORTAR: TRACKED, XM755; FIRING CARTRIDGE, HE: M374A2 AND M374; CARTRIDGE, WP, M375A2 AND M375; CARTRIDGE, ILLUMINATING: M301A3; CARTRIDGE, TRAINING: M68 AND TRAINING DEVICE, M1 (REPRINTED W/BASIC INCL C1-4) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29; FIRING CARTRIDGE, HE, M374A2 AND M374; CARTRIDGE, WP, M375A2 AND M375 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 81MM, M29 AND M1 FIRING CARTRIDGE, ILLUMINATING, M301A3 WITH FUZE, TIME, M84A1, HEIGHT OF BURST, 600 METERS (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM, M29A1 AND M1; FIRING CARTRIDGE, ILLUMINATING, M301A2 WITH FUZE, TIME: M84A1 HEIGHT OF BURST, 381 METERS (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29; FIRING TRAINING DEVICE, 81-MM: M1 SABOT WITH CARTRIDGE, TP, M744 (CHARGE 1); CARTRIDGE, TP, M745 (CHARGE 2); CARTRIDGE, TP, M746 (CHARGE 3), CARTRIDGE, TP, M747 (CHARGE 4) (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM: M29A1 AND M29 AND FIRING CARTRIDGE, HE: M374A3 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE FOR MORTAR, 81-MM: M29A1 AND M29; MORTAR, 81-MM, SELF-PROPELLED: M125A1 AND M125; CARRIER, 81-MM MORTAR: TRACKED, M755 M755 AND FIRING CARTRIDGE, HE, M374A3 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 81MM, M252, M252A1, AND M252A2 FIRING CARTRIDGE, HE, M821; CARTRIDGE, HE M889; CARTRIDGE, RP, M819; CARTRIDGE, ILLUMINATING, M853A1; CARTRIDGE, TP, M879; CARTRIDGE, TP, M879A1; CARTRIDGE, HE, M821A1; CARTRIDGE, HE, M821A2; CARTRIDGE, HE, M821A3; CARTRIDGE, HE, M821A4; CARTRIDGE, HE, M889A1; CARTRIDGE, HE, M889A2; CARTRIDGE, HE, M889A3 (PROV); CARTRIDGE, HE, M889A4; AND CARTRIDGE, IR ILLUMINATING, M816; AND MORTAR, 81MM, M29A1 AND MORTAR, 81MM, M252, M252A1, AND M252A2 FIRING CARTRIDGE, TP (SR), M880 (S&I BY PROP SEE DETAILS, FOOTNOTES), MORTAR, 81-MM, M29A1, M29, AND M1; FIRING CARTRIDGE, TRAINING, M68 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 90-MM: M67 AND FIRING CARTRIDGE, HEAT, M371 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 105MM GUN, M68 AND M68A1 ON TANK, COMBAT, FULL TRACKED: 105MM GUN, M1, M60A3, M60A1, M60 AND M48A5; FIRING CARTRIDGE, APFSDS-T, M900; CARTRIDGE, APFSDS-T, M833; CARTRIDGE, APFSDS-T, M774; CARTRIDGE, APFSDS-T, M735; CARTRIDGE, APDST, M728; CARTRIDGE, APDST-T, M392A2, M392A1, AND L36A1; CARTRIDGE, HEAT-T-MP, M456A2; CARTRIDGE, HEAT-T, M456A1 AND M456; CARTRIDGE, HEP-T, M393A2 AND TP-T, M393A1; CARTRIDGE, WP-T, M416; CARTRIDGE, APERS-T, M494; CARTRIDGE, TPDS-T, M724; CARTRIDGE, TP-T, M490A1; CARTRIDGE, TP-T, M490 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 105-H-6 FOR CARTRIDGE, HE, M444 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 105-AS-2 FOR CARTRIDGE, HE, M444 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 105-AS-4 FOR CARTRIDGE, HE, DPICM, M915 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M137A1 (M137E1) AND M137 ON HOWITZER, LIGHT, TOWED, 105MM, M102 AND CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A1 FIRING CARTRIDGE, HE, M1 CARTRIDGE, GAS, PERSISTENT, H AND HD, M60 CARTRIDGE, GAS, NONPERSISTENT, GB, M360 CARTRIDGE, SMOKE, WP, M60, M60A1 AND M60A2 CARTRIDGE, SMOKE, HC AND COLORED, BE, M84A1 CARTRIDGE, ILLUMINATING, M314A3 CARTRIDGE, HEP-T, M327 CARTRIDGE, ANTIPERSONNEL, M546 CARTRIDGE, HEAT-T, M622 CARTRIDGE, HE, M760 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M137 AND M137A1 ON HOWITZER, LIGHT, TOWED, 105MM, M102 AND CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A3 FIRING CARTRIDGE, HERA, M548 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A1 FIRING CARTRIDGE, HERA, M913 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 105MM HOWITZER, M137 AND M137A1 ON HOWITZER, LIGHT, TOWED, 105MM, M102 AND CANNON, 105MM HOWITZER, M20A1 ON HOWITZER, LIGHT, TOWED, 105MM, M119A3 FIRING CARTRIDGE, HERA, M927 (S&I BY PROP SEE DETAILS, FOOTNOTES)-, CANNON, 105-MM HOWITZER: M2A2 AND M2A1 ON HOWITZER, LIGHT, TOWED: 105-MM, M101A1 AND M101 AND CANNON, 105-MM HOWITZER: M49 ON HOWITZER, LIGHT, SELF-PROPELLED, FULL-TRACKED, 105-MM: M52A1 AND M52; FIRING CARTRIDGE, HE: M1; CARTRIDGE, GAS PERSISTENT, H AND HD, M60; CARTRIDGE, GAS, NONPERSISTENT, GB, M360; CARTRIDGE, SMOKE, WP, M60; CARTRIDGE, SMOKE, BE, M84 AND M84B1 (HC AND COLORED); CARTRIDGE,SMOKE, HC, BE, M84A1 (M84E1); CARTRIDGE, ILLUMINATING, M314A3 (M314A2E1); CARTRIDGE, HEP-T, M327; CARTRIDGE, ANTIPERSONNEL, XM546 AND CARTRIDGE, HEAT-T, M622 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, RECOILLESS, 106MM, M40, FIRING, SHELL, HEAT, M344 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 106-MM RECOILLESS RIFLE, M40A1 ON MOUNT, M79; FIRING CARTRIDGE, 106-MM: HEAT, M344 (S&I BY PROP SEE DETAILS, FOOTNOTES), RIFLE, 106-MM, M40 FIRING CARTRIDGE, HEP-T, M346 (S&I BY PROP SEE DETAILS, FOOTNOTES), GUN, 106-MM RECOILLESS RIFLE, M40A4 AND M40A2 ON MOUNT, M79; FIRING CARTRIDGE, ANTIPERSONNEL, XM581 WITH FUZE, MT, XM592E1 AND CARTRIDGE, ANTIPERSONNEL, M581 WITH FUZE, MT, M592 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 120MM GUN, M256 ON TANK, COMBAT, FULL TRACKED: 120MM GUN, M1A1 FIRING CARTRIDGE, APFSDS-T, M829 CARTRIDGE, APFSDS-T, M829A1 CARTRIDGE, APFSDS-T, M829A2 CARTRIDGE, APFSDS-T, M827 CARTRIDGE, APFSDS-T, DM13 CARTRIDGE, HEAT-MP-T, M830 CARTRIDGE, HEAT-MP-T, M830A1 CARTRIDGE, HEAT-MP-T, DM12 CARTRIDGE, TPCSDS-T, M865 CARTRIDGE, TPCSDS-T, M865 PIP CARTRIDGE, TPFSDS-T, M866 CARTRIDGE, TPFSDS-T, DM28 CARTRIDGE, HEAT-TP-T, M831 CARTRIDGE, TP-T, M831A1 CARTRIDGE, HEAT-TP-T, DM18 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 120MM: CARRIER-MOUNTED M121 MARTAR, 120MM: TOWED M120 FIRING CARTRIDGE, HE, M934 CARTRIDGE, HE, M934A1 CARTRIDGE, HE, M933 CARTRIDGE, WP, XM929 CARTRIDGE, WP, M929 CARTRIDGE, ILLUM, XM930 CARTRIDGE, IR ILLUM, XM983 CARTRIDGE, FRPC, M931 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 120MM: CARRIER-MOUNTED RMS6L (BCT STRYKER) FIRING CARTRIDGE, HE, M934 CARTRIDGE, HE, M933 CARTRIDGE, HE, M934A1 CARTRIDGE, WP, XM929 CARTRIDGE, WP, M929 CARTRIDGE, ILLUM, M930 CARTRIDGE, ILLUM, M930E1 CARTRIDGE, IR ILLUM, M983 CARTRIDGE, FRPC, M931 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR MORTAR, 120MM: TOWED M327 FIRING PROJECTILES, HE, M1101 PROJECTILES, SMOKE, WP, M1103 PROJECTILES, ILLUMINATING, M1105 PROJECTILES, PRACTICE, M1107 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 152-MM GUN LAUNCHER: M81E1 AND M81 ON ARMORED RECONNAISSANCE/AIRBORNE ASSAULT VEHICLE: FULL TRACKED, 152-MM, M551; FIRING CARTRIDGE, 152-MM: HEAT-MPT, XM409E5; CARTRIDGE, 152-MM: TP-T, XM411E4 AND XM411E3; CARTRIDGE, 152-MM: HE-T, XM657E2; CARTRIDGE, 152-MM: CANISTER, XM625 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 152-MM GUN-LAUNCHER: M162 ON TANK, COMBAT, FULL-TRACKED: 152-MM, M60A2; FIRING CARTRIDGE, 152-MM: HEAT-T-MP, M409; CARTRIDGES, 152-MM: TP-T, M411A1 AND M411 AND CARTRIDGE, 152-MM CANISTER, M625 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AR-2 FOR PROJECTILE, SMOKE, M825 AND PROJECTILE, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AK-2 FOR PROJECTILE, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILES, HE, M449A1 (M449E2) PROJECTILES, HE, M449 (T379) PROJECTILES, HE, M449E1 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 155-AN-1 FOR PROJECTILE, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 144-ADD-K-1 FOR HOWITZER, ORGANIZATIONAL, MEDIUM, SELF-PROPELLED, 155-MM, M109, M109A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-1 FOR PROJECTILE, HE, M692 AND PROJECTILE, HE, M731 (REPRINTED W/BASIC INCL C1-2) (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, HE, M692 PROJECTILES, HE, M731 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AK-2 FOR PROJECTILE, HE, M692; PROJECTILE, HE, M731 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-1 FOR PROJECTILE, ANTITANK, M718 AND M741 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, ANTITANK, M718 AND M718A1 PROJECTILES, ANTITANK, M741 AND M741A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AK-2 FOR PROJECTILE, ANTITANK, M718 AND M741 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AN-2 FOR PROJECTILES, SMOKE, M825 AND PROJECTILES, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILE, HE, M483A1 USING REGISTRATION DATA FOR PROJECTILE, HE, M107 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILES, HE, M483A1 USING REGISTRATION DATA FOR PROJECTILES, HE, M107 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 155-AM-3 FOR PROJECTILE, HE, M483A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLE ADDENDUM TO FT 155-AM-2 FOR PROJECTILES, SMOKE, M825 AND PROJECTILES, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), ADDENDUM TO FT 155-AM-3 FOR PROJECTILE, SMOKE, M825 AND PROJECTILE, SMOKE, M825A1 (S&I BY PROP SEE DETAILS, FOOTNOTES), PROVISIONAL AIMING DATA ADDENDUM TO FT 155-ADD-AU-PAD FOR PROJECTILE, HE, M864 (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 155-MM HOWITZER, M126A1 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155-MM, M109 AND CANNON, 150MM HOWITZER, M1A2 ON HOWITZER, MEDIUM, TOWED, 150MM, M114A2 FIRING PROJECTILE, HE, M483A1 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), CANNON, 155MM HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1 HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1B HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2 AND HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3 AND CANNON, 155MM, HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 FIRING PROJECTILE, HE, M107 PROJECTILE, SMOKE, WP, M110, PROJECTILE, SMOKE, BE, M116, M116B1 (HC AND COLORED) PROJECTILE, SMOKE, BE, M116A1, (HC) PROJECTILE, GAS, PERSISTENT, H AND HD, M110 PROJECTILE, GAS, NONPERSISTENT, GB, M121A1 PROJECTILE, GAS PERSISTENT, VX, M121A1 PROJECTILE, ILLUMINATING, M485A2 AND M485A1 (REPRINTED W/BASIC INCL C1) (S&I BY PROP SEE DETAILS, FOOTNOTES), FIRING TABLES FOR CANNON, 155MM HOWITZER, M185 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A1B; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A2; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A3B; HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A4 AND CANNON, 155MM HOWITZER, M284 ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A5, M109A6 AND M109A7 AND CANNON, 155MM HOWITZER, M284A2 CHROME ON HOWITZER, MEDIUM, SELF-PROPELLED, 155MM, M109A6 AND M109A7 AND CANNON, 155MM HOWITZER, M199 ON HOWITZER, MEDIUM, TOWED, 155MM, M198 AND CANNON, 155MM HOWITZER, M776 ON HOWITZER, MEDIUM, TOWED, 155MM, M777, M777A1 AND M777A2 AND CANNON, 155MM HOWITZER, M776 CHROME ON HOWITZER, MEDIUM, TOWED, 155MM, M777A2 FIRING PROJECTILE, HE, M107; PROJECTILE, SMOKE, WP, M110, M110A1 AND M110A2; PROJECTILE, SMOKE, BE, M116A1 (HC); PROJECTILE, ILLUMINATING, M485A2 AND M485A1; AND PROJECTILE, IR ILLUMINATING, M1066 (S&I BY PROPONENT, SEE FOOTNOTES. After the bands are broken and the box opened, the rounds should be removed by allowing them to roll out along the lid of the box (Figure 4-8). The M252 is highly accurate up to ranges of 4500m to 5700m depending on the He lays for deflection, taking the proper sight picture. The second ammunition bearer retrieves the aiming posts. The M252 81 mm medium weight mortar is a British-designed smooth bore, muzzle-loading, high-angle-of-fire weapon used for long-range indirect fire support to light infantry, air assault, and airborne units across the entire front of a battalion zone of influence. c. The assistant gunner disengages the barrel clamps and moves the bipod from the immediate area of the mortar position. They use the M5 propelling charge that consists of eight cloth bags attached to the tail unit. The gunner should expose 6 inches (150 millimeters) of elevation shaft and center the buffer carrier.