Results for 5.56x45mm NATO AR Rifles

NBS Premium Series 11.5 5.56 Upper Assembly w/ Geissele MK4 Handguard

NBS 16" Carbine 5.56 NATO 1:7 Complete Upper

Zastava M90 18.25" 5.56X45 Semi Auto Rifle Serbian Red Furniture Bulged Trunnion 1.5mm Receiver Chrome Lined Barrel

Aero Precision M4E1 Builder Set w/ 15" Enhanced M-LOK Handguard - Yorktown Cerakote

Mk18 Block Ii Tribute Bundle

Brn-4 Upper Receiver Build Kits - Brn-4 Upper Receiver Build Kit, 16'''' Heavy Barrel

Brn-4 Upper Receiver Build Kits - Brn-4 Upper Receiver Build Kit, 10.4'''' Medium Barrel

M16a1 20'''' Rifle Length Upper W/Colt Ar-15 4x21mm - Brn-16a1 5.56x45 Nato 20'''' Bbl 1-12 Twist Upper W/Colt 4x21mm

Dd 10.3'''' Mk18 Socom Upper Receivers W/ Optics - Dd 10.3'''' Mk18 Socom Upper W/ Exps2-0 Holographic Red Dot

Dirty Bird 10.5" Government Carbine 5.56 M-LOK Upper Assembly - V3, OD Green

Dirty Bird 16" 5.56 NATO Govt M-LOK AR-15 Complete Upper Assembly V3 - FDE

Premium Series 16" 5.56 Upper Assembly w/ Rosco Barrel and Geissele MK14

7.5" 5.56 NATO Pistol AR-15 Complete Upper Assembly

Sport 16" 5.56 Gov / SOCOM Midlength M-LOK Upper Assembly

20" 5.56 Gov / SOCOM M-LOK Upper Assembly

One Horse 16" 5.56 SOCOM Midlength 1:8 M-LOK Complete Upper

16" 5.56 Phosphate Midlength M-LOK Lightweight Complete Upper

16" 5.56 Phosphate Midlength M-LOK Lightweight Upper Assembly

Aero Precision M4E1-T Threaded 18" 5.56 AR 15 Upper Assembly

16" 5.56 Gov / SOCOM Midlength Ultralight M-LOK Upper Assembly

Aero Precision M4E1 Enhanced No FA Complete Upper, 10.5" 5.56 Carbine, 9" Enhanced M-LOK - Anodized Black

16" AR 15 "Tiger King" Complete Upper W/12" M-LOK Handguard

Sons of Liberty Gun Works EXO3 10.5" 5.56 NATO Upper

Wolf T91 AR15 Upper 14.5"