Why do special forces operators sometimes use very short M4 rifles, when longer barrel M4s provide far better accuracy? - Quora
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Anderson Manufacturing AM15-BR AR-15 Optic Ready Rifle 5.56mm NATO 16 Inch 1 In 8 Twist Barrel Low Profile Gas Block Carbine Length Gas System A2 Handguard M4 Butt Stock 30 RD Stainless
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