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| 81-MM Mortar,M1 Weight: 136 lbs assembled; tube 44.5 lbs; mount 46.5 lbs; base plate 45 lbs. Overall Length: 3 ft 9.5 in. Muzzle velocity (HE): 700 f.p.s. Rate of Fire: 18 rounds/min norm; 30-35 rpm max Rocket: M7A1 shaped charge,rocket motor ignited electrically Maximum Range (HE): 3290 yds Sight: M4 Ammunition: M43A1 Light HE: 6.87 lbs; range min 200 yds; range max 3290; 80% frag radius 25 yds (comparing favorably with 75mm howitzer); fast detonating fuse (explode on surface). M45, M45B1 Heavy HE: 10.62 lbs; range max 2558 yds; bursting radius comparable with 105mm howitzer; equipped with delay fuse so some penetration possible for demolition use. M56 Heavy HE: 15.01 lbs; range max 1300 yards; adjustable fuse for quick or delay operation. |
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