ANDERSON 5.56 Optic Ready Upper, No Bolt Carrier Group (B2-K611-AF00)

Chambered in .223 Remington16" M4-contour barrel1:8" twist7075-T6 flat top upper receiverCarbine-length handguardStandard charging handleA2 flash hider

Optics Ready upper receiver assembly5.56 NATO (accepts .223 Remington)16in M4 profile barrelA2 HandGuardA2 Flash HiderStandard Charging HandleStandard Bolt Carrier Group

16" M4 Complete Upper with 15" Keymod ForearmCarbine Length Gas Set UpM4 Contour with a 1-8 TwistChambered in .223 WyldeKnight Stalker Muzzle Device9310 steel bolt coated per mil spec

Optics Ready upper receiver assemblyChambered in 5.56/ .22320" M16 contour barrel1:9 twistA2 flash hiderForged upper receiverPlastic handguardsStan

Standard bolt carrier group for AR-15 platform firearmsComplete with bolt assemblyChrome linedMPI testedPhosplate Finish The ANDERSON AM-15 5.56 NATO Bolt Carrier Group (B2-K630-A000-0P)<