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NBS 18″ .223 Wylde 1:8 Complete Upper
NBS 16″ Gov Mid M-LOK Upper Assembly – BLEM
NBS 16″ .223 Wylde Midlength Nitride M-LOK Rifle Kit
NBS 16″ Slick Side Billet 5.56 Midlength 416R M-LOK Rifle Kit
NBS 16″ Lightweight Slick Slide Billet .223 Wylde Mid-Length 1:8 M-LOK Complete Upper
NBS 16″ Black Nitride 4150 Steel Contour Barrel, 6.5 Grendel Type II, Straight Flutes, Carbine Length Gas System w/ 1:8 Twist
16″ 7.62x39mm Heavy Contour 1:10 Carbine 416R Barrel – Stainless
16″ 6.8 SPC II M4 Contour 1:10 Carbine 41V50 Barrel – Parkerized
NBS 16″ 6.8 SPC II Carbine Quad Rail Upper Assembly
NBS 16″ 6.5 Grendel II M4 Contour 1:8 Carbine 416R Barrel – Straight Fluted – Black Nitride
16″ 5.56 Parkerized 1:9 Twist Carbine Length Barrel
NBS 16″ 5.56 Parkerized 1:8 Carbine Length Barrel
16″ 5.56 NATO Contour 1:7 Mid Length 416R Barrel – Stainless
16″ 5.56 NATO 1:8 Twist 4150V Black Nitride Mid-Length Barrel
16″ 5.56 HBAR 1:9 Twist Black Nitride Carbine Barrel
NBS 16″ 5.56 Barreled Upper Combo Kit
16″ 416R Stainless Steel M4 Contour Barrel .300 Blackout Carbine Length G 1:8 Twist
16″ 4150 Steel M4 Contour Barrel .350 Legend Carbine Length Gas System w/ 1:16 Twist
16″ 4150 Parkerized Heavy Barrel .450 Bushmaster Carbine Length Gas System 1:24 Twist
NBS 16″ 300 BLK Nitride Carbine M-LOK Upper Assembly
16″ .458 SOCOM Carbine Length Black Nitride Barrel 1:14 Twist
16″ .458 SOCOM Carbine Length 416R Stainless Steel Barrel 1:14 Twist
16″ .300 BLK Parkerized 1:8 Heavy Profile Carbine Length Barrel
16″ .223 Wylde Black Nitride 1:8 Midlength Barrel