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The U.S. rifle caliber .30, M1, is an air-cooled, gas-operated, clip-fed, and semiautomatic shoulder weapon. This means that the air cools the barrel ; that the power to cock the rifle and chamber the succeeding round comes from the expanding gas of the round fired previously ; that it is loaded by inserting a metal clip (containing a maximum of eight rounds) into the receiver ; and that the rifle fires one round each time the trigger is pulled. 4. General Data Weight : Complete with sling, eightround clip and cleaning equipment (approximate) _ 11% pounds. Length : Overall _____________ _____ _ 43inches. Sighta : Front _____________________ Fixed. Rear _______ _____ ____ ______ Adjustable. One click of elevation or windage movea the strike of the bullet .7 centimeters at 26 meters. Trigger pull : Minimum _________________ 5% pounds. Maximum _________________ 7% pound& Ammunition ___________________ See chapter 6. Muzzle velocity (approximately) _ 853 metera (2,SOO feet ) per second. Chamber pressure ______ ___ _____ 50,000 pounds per square inch. Maximum range________________ 3,200 meters. Maximum effective range’______ 460 meters. Maximum effective rate of flre __ 16 to 24 rounds per minute.
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