CMMG BBL 5.56MM 16.1" M4 4140CM SBN

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CMMG BBL 5.56MM 16.1" M4 4140CM SBN

CMMG BBL 5.56MM 16.1" M4 4140CM SBN
CMMG Barrel, 556NATO, 16.1" Barrel, 1:7 Twist, Carbine Length, 4140 CrMo,Salt Bath Nitride Finish, 1/2x28 TPI Thread 55DE10A