Upper Receivers

NBS 10.5 5.56 Gov / SOCOM Carbine M-LOK Upper Assembly

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

Aero Precision M4E1 Threaded Assembled Upper Receiver and 9" ATLAS R-ONE M-LOK Handguard Combo - Anodized Black

Colt M4 Upper Receiver Assembly

Centurion Arms C4 5.56 Billet AR-15 Upper Receiver

Centurion Arms CM4 5.56 Forged AR-15 Upper Receiver

M16A2 Assembled Upper Receiver

NBS AR-15 Left Handed Slick Side Billet Upper Receiver

M16A2 Stripped Upper Receiver

NBS 16 Slick Side Billet 9mm SOCOM 1:10 M-LOK Upper Assembly

NBS 4" Slick Side Billet 9mm Pistol Carbon Fiber Upper Assembly

Stag Arms A3 Flattop Left-Handed Upper Receiver Assembly - FDE

NBS 18" .223 Wylde Spiral Fluted 1:8 Fortis Night Rail Upper Assembly

NBS 16" 6.8 SPC II Carbine Quad Rail Upper Assembly

NBS 16" Lightweight Slick Slide Billet .223 Wylde Mid-Length 1:8 M-LOK Complete Upper

NBS AR-15 Assembled Upper Receiver

NBS 4" Slick Side Billet 9mm Nitride Pistol M-LOK Upper Assembly

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

16" 5.56 NATO Lightweight Carbine M-LOK Complete Upper

Smith and Wesson Complete Uppers 5.56 16" Furniture Magpul PD Trade-In

NBS Slick Side Billet Receiver & M-LOK Handguard Combo - 15"

NBS Slick Side Billet Receiver & M-LOK Handguard Combo - 4"

NBS Slick Side Billet Receiver & M-LOK Handguard Combo - 12"

NBS Slick Side Billet Receiver & M-LOK Handguard Combo - 7"