Out of stock $1,925.00 HK MR556A1 Complete Upper Receiver, 223 Remington/556NATO, 16.5" Cold Hammer Forged Barrel, Black, M-Lok Free Float Rail, Flash Hider, Complete MR556 Bolt Carrier Group, Proprietary Tungsten Buffer, Proprietary Buffer Spring 81000584
Out of stock $251.10 Spike's Tactical Generation 2, Billet, Upper, 223 Remington, 556NATO, Black, Mil-Spec Barrel Nut SFT52B2
Out of stock $135.42 CMMG MK4, Upper Receiver, 223 Remington/556NATO, Billet 7075-T6 Aluminum, Cerakote Finish, Armor Black 55BA206-AB
Out of stock $48.98 LBE Flash Hider, 223 Remington/556NATO, 1/2x28 Thread Pattern, Matte Finish, Black ARFH-REV
Out of stock $629.00 FN Complete Upper Receiver, 223 Remington/556NATO, 11.5" Barrel, Carbine Length Gas System, Anodized Finish, Black, Two Piece Double Heat Shield Handguard 36-100088-01
Out of stock $755.00 FN Upper, Complete, 223 Remington, 556NATO, Black Finsh, 16" (14.5" Barrel With Pinned Brake), Anodized, Flat Top, No Sights 36-100055-01
Out of stock $1,299.00 FN Barrel Assembly, 223Rem/556NATO, 14", 1:7 Twist, Fits SCAR 16S, Front Sight Assembly, Gas Block/ Regulator, Gas Piston, and Flash Hider 98842
Out of stock $592.00 MI Upper, 223 Rem/556NATO, 10.5" Barrel, Black, MLOK Handguard, Fits AR-15 MI-556CRM9-U
