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NBS 11.5″ Slick Side 5.56 Nitride-Carbine M-LOK Upper Assembly
Dirty Bird Industries 7.5″ 5.56 DRP Pistol M-LOK V2 Upper Assembly
NBS 7.5″ Slick Side Billet 300 BLK Nitride Pistol M-LOK Upper Assembly
NBS 10.5″ 5.56 Gov / SOCOM Carbine M-LOK Upper Assembly
Dirty Bird 16″ Government Midlength 5.56 M-LOK Left-Handed Complete Upper
NBS 16″ .223 Wylde Gov Mid M-LOK Upper Assembly Black
NBS 10.5″ Carbine M4 M-LOK 5.56 NATO 1:7 Complete Upper
NBS Premium 16″ .223 Wylde Gov Mid M-LOK Complete Upper
NBS Sport 7.5″ 5.56 DRP Pistol M-LOK Upper Assembly
NBS Premium Series 11.5″ 5.56 Upper Assembly w/ Geissele MK4 Handguard
NBS 7.5″ 5.56 DRP Pistol M-LOK Upper Assembly
NBS 16″ 5.56 Left Handed Complete Upper
Dirty Bird 16″ 5.56 NATO Govt M-LOK Quad Rail Complete Upper
NBS 7.5″ Slick Side Billet 5.56 Nitride Pistol M-LOK Upper Assembly
NBS Premium Series 16″ Upper Assembly w/ BA Barrel and Geissele MK8 Handguard
NBS 8.5″ .300 BLK Pistol M-LOK Upper Assembly
NBS 4″ Slick Side Billet 9mm Nitride Pistol M-LOK Upper Assembly
NBS 20″ 5.56 Rifle M-LOK Upper Assembly
NBS 16″ Slick Side Billet 9mm SOCOM 1:10 M-LOK Upper Assembly
NBS 16″ Slick Side Billet 5.56 416R Stainless Midlength 1:7 M-LOK Complete Upper
Aero Precision AR-15 Complete Upper, 16″ 5.56 Mid-Length Barrel w/ Pinned FSB, M4 Handguard
Dirty Bird Slick-Side 16″ 9mm 1:10 M-LOK Complete Upper
Dirty Bird 16″ Side-Charging 5.56 NATO Govt M-LOK Complete Upper
Dirty Bird 14.5″ Pin & Weld Government V2 5.56 M-LOK CA Compliant Complete Upper – Black
Dirty Bird Brand AR-15 Parts
