5.56x45mm NATO Rifle Parts

Spikes Tactical Upper 5.56 11.5in FN CHF w/FDE MOE Handguards & FSP

Spikes Tactical Upper 5.56 16in CHF Midlength w/ 12in SAR3 Rail

Spikes Tactical Upper 5.56 18in LW SPR w/13.2in SAR3 Rail

Spikes Tactical Upper 5.56 8.1in CHF Barrel w/7in SAR3

Spikes Tactical Upper 5.56 14.5in 16in OAL Midlength Lightweight LE w/9in SAR3 Rail w/ Vortex FH

Spikes Tactical Upper 5.56 14.5in 16in OAL Midlength Lightweight LE w/13.2in SAR3 Rail w/ Vortex FH

Spikes Tactical Upper 5.56 14.5in 16in OAL Midlength Lightweight LE w/12in M-LOK Rail w/ Dynacomp

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

Spikes Tactical Upper 5.56 16in Midlength LE w/12in M-LOK Rail

Spikes Tactical Upper 5.56 16in M4 LE w/9in SAR3 Rail

Spikes Tactical Upper 5.56 16in M4 LE w/7in SAR3 Rail & FSP

Spikes Tactical Upper 5.56 16in M4 LE w/9in M-LOK Rail

Spikes Tactical Upper 5.56 16in M4 LE w/7in M-LOK Rail & FSP

Spikes Tactical Upper 5.56 16in M4 LE w/13.2in M-LOK Rail

Ar-15 Blem Super Duty Stripped Lowers - Ar-15 Blemished Super Duty Lower 5.56mm Gray

Ar-15 Blem Super Duty Stripped Lowers - Ar-15 Blemished Super Duty Lower 5.56mm 40mm Green

Ar-15 Blem Super Duty Stripped Lowers - Ar-15 Blemished Super Duty Lower 5.56mm Black

Stag 15 223 Varminter Upper Receivers - Stag 15l Left Hand Varminter Upper

Armaspec AR10 Gun Builders Lower Parts Kit SS/Bronze

Armaspec Superlight .223/5.56mm Lower Parts Kit SS/Bronze

Armaspec Superlight .223/5.56mm Gun Builders Kit SS/Bronze

OP Exclusive Moriarti AR-15 Upper Receiver Assembly 5.56x45mm NATO 10.5in Carbine Government M-LOK 1-7 Twist 1/2x28 Diamond Cut Free-Float Handgrd

Moriarti AR-15 5.56/.223 16in Carbine Upper Assembly Black 25.25in

Moriarti AR-15 5mm NATO 5 inch Upper Receiver Medium Micro Length 1-5 Twist 1/2x28 A2 Flash Hider Nitride