5.56x45mm NATO Gun Parts

Aero Precision M4E1-T Complete Upper Receiver Threaded 5.56x45mm Mid Pencil 16in Barrel ATLAS S-ONE 15in Handguard M-LOK Cerakote Flat Dark Earth

Matrix Diversified Magpul AR-15 Kit, Proveil Reaper Buck Camo

ATI Milsport 223/5.56 Upper/Lower Receiver Combo with Burnt Bronze Finish

Franklin Armory OPS-16 5.56 NATO 16in Piston Complete Upper Reciever Black

IWI Tavor X95 5.56 SBR Convrsn Kit 13" FDE, RH Bolt

Radian Weapons AX556, Billet Upper/Lower Set, Semi-auto, 556 NATO/223 Remington, Ambidextrous, Cerakote Finish, Brown, Includes Radian Talon Ambidextrous Safety, Hammer Pin, 14 in MLOK Handguard R0413

Radian Weapons AX556, Billet Upper/Lower Set, Semi-auto, 556 NATO/223 Remington, Ambidextrous, Cerakote Finish, Olive Drab Green, Includes Radian Talon Ambidextrous Safety, Hammer Pin, 17 in MLOK Handguard R0399

Tiger Rock Complete Upper Receiver AR-15 5.56 NATO 7in Pistol Length 1-8 Twist w/ 4in Super Slim Hanguard Black Large

Tiger Rock AR-15 Complete Upper Receiver 5.56mm 24in 16in Barrel M4 Carbine 1x8 Twist 1/2x28 Thread 10in Quad Rail Handguard Brake Nitride Anodized

Tiger Rock AR-15 Rifle Build Kit BCG LPK and Stock Kit 5.56mm 17in 16in Barrel M4 A2/Gov Carbine 1x8 1/2x28 10in Quad Rail Handguard Brake Nitride

Spikes Tactical Upper 5.56 18in LW SPR w/13.2in BAR2 Rail

Spikes Tactical Upper 5.56 16in Midlength LE w/MOE Grey SL Handguard

Spikes Tactical Upper 5.56 16in Midlength LE w/MOE FDE SL Handguard

Spikes Tactical Upper 5.56 16in M4 LE w/MOE FDE SL Handguard

Spikes Tactical Upper 5.56 16in M4 LE w/MOE BLK SL Handguard

Spikes Tactical Upper 5.56 11.5in FN CHF w/M4 Handguards & FSP

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/9in BAR2 Rail w/ Vortex

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/12in BAR2 Rail w/ Vortex

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/10in BAR2 Rail w/ Vortex

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/Mid Length Handguards w/ Vortex

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/MOE Handguards w/ Vortex

Spikes Tactical Upper 5.56 14.5in 16in OAL Midlength Lightweight LE w/13.2in BAR2 Rail & Dynacomp

Spikes Tactical Upper 5.56 14.5in 16in OAL Midlength Lightweight LE w/Mid Length Handguards w/ Dynacomp

Spikes Tactical Upper 5.56 16in Midlength LE w/10in BAR2 Rail