Rosco 105 M4 9MM Nato
$107.96Rosco Manufacturing M4, Barrel, 9MM, 10.5″, Fits AR-9, Nitride Finish, Black BL-105-M4-9MM-10
SBR Barrels & Upper Receivers
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Rosco 125 M4 556 Nato
$123.62Rosco Manufacturing M4, Barrel, 556NATO, 12.5″, Carbine Length Gas System, Fits AR-15, Nitride Finish, Black BL-125-M4-556-7-C
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Rosco 145 Gvt 556 Nato
$128.31Rosco Manufacturing M4, Barrel, 556NATO, 14.5″, Mid Length Gas System, Fits AR-15, Nitride Finish, Black BL-145-GVT-556-7-M