5.56x45mm NATO Gun Parts

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Sniper Grey

CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 12.5in Charcoal Green

CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Tungsten

CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Sniper Grey

CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Midnight Bronze

CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Coyote Tan

CMMG Mk4 5.56x45mm NATO Endeavor Upper Group Receiver 18in Charcoal Green

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Tungsten

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Titanium

CMMG Mk4 5.56X45mm NATO Resolute Upper Group Receiver 16.1in Charcoal Green

TRYBE Defense TRYBE Defense Self-Timing Muzzle Brake .22 Cal./5.56 1/2x28 Black

TRYBE Defense AR-15 5.56x45mm NATO 16in Complete Upper Receiver Pencil Mid Length1-7 Twist 1/2x28 A2 Black

TRYBE Defense AR-15 5.56x45mm NATO 16in Complete Upper Receiver M4 Carbine Length 1-7 Twist 1/2x28 A2 Black

TRYBE Defense Rifle Barrel and TRYBE Defense Self-Timing Muzzle Brake .22 Caliber/5.56 1/2x28

TRYBE Defense Crush Washer for A2 Flash Hider AR-15 .223/5.56mm & 9mm 1/2in Black

TRYBE Defense Medium Profile AR-15 Rifle Barrel .223 Wylde 20 in Black

TRYBE Defense AR-15 5.56 Complete Bolt Carrier Group BCG High-Polished Metallic Chrome Nitride

TRYBE Defense AR Small Parts Kit AR-15/M-16 5.56mm Black

Spikes Tactical Upper 5.56 16in CHF Midlength w/ 13.2in SAR3 Rail

Spikes Tactical Upper 5.56 16in CHF Midlength w/ 9in SAR3 Rail

Spikes Tactical Upper 5.56 11.5in FN CHF w/9in BAR2 Rail

Spikes Tactical Upper 5.56 11.5in FN CHF w/7in BAR2 Rail & FSP

Spikes Tactical Upper 5.56 11.5in FN CHF w/13.2in BAR2 Rail

Spikes Tactical Upper 5.56 11.5in FN CHF w/12in BAR2 Rail