AR Parts in 5.56x45mm NATO

Dirty Bird 10.3" 5.56 NATO 1:8 V2 M-LOK Upper Assembly - Midnight Bronze

Dirty Bird 10.3" 5.56 NATO 1:8 V2 M-LOK Upper Assembly - OD Green

Dirty Bird 10.3" 5.56 NATO 1:8 V2 M-LOK Upper Assembly - FDE

Dirty Bird 16 RECCE V2 5.56 M-LOK Upper Assembly

Dirty Bird 16 RECCE V2 5.56 M-LOK Upper Assembly

Dirty Bird 16 RECCE V2 5.56 M-LOK Upper Assembly

Dirty Bird 16 RECCE V2 5.56 M-LOK Upper Assembly

Dirty Bird 16 RECCE V2 5.56 M-LOK Upper Assembly

Dirty Bird 7.5" Pistol 556 M-LOK Complete Upper - FDE

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

Spikes Tactical Upper 5.56 11.5in FN CHF w/10in BAR2 Rail

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

Spikes Tactical SB51605-M49R 5.56 - 16" M4 LE w/FSP - No Bayo Lug Barrel 1:7 Twist

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/13.2in SAR3 Rail w/ Vortex

Spikes Tactical Upper 5.56 14.5in 16in OAL CHF Midlength w/10in SAR3 Rail w/ Vortex

Spikes Tactical Upper 5.56 11.5in FN CHF w/7in SAR3 Rail & FSP

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/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