5.56x45mm NATO Upper Receivers

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

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 10.3" 5.56 NATO 1:8 V2 M-LOK Upper Assembly - Black

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 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 16 RECCE V2 5.56 M-LOK Upper Assembly

Dirty Bird 7.5" Pistol 556 M-LOK Complete Upper - Midnight Bronze

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

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

Dirty Bird 16" Govt Mid 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