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NBS 18″ 6.5 Grendel 1:8 Twist Black Nitride Mid-Length Heavy Barrel w/ Straight Flutes
NBS 18″ .224 Valkyrie Mid-Length 416R Stainless Steel Spiral Fluted Heavy Barrel
NBS 18″ .223 Wylde Parkerized Spiral Fluted 1:8 Mid-Length Barrel
NBS 18″ .223 Wylde 1:8 Complete Upper
NBS 16″ 6.5 Grendel II M4 Contour 1:8 Carbine 416R Barrel – Straight Fluted – Black Nitride
NBS 16″ 5.56 NATO 1:8 Carbine Length M4 Barrel – Black Nitride
NBS 16″ .300 BLK Parkerized 1:8 Heavy Profile Carbine Length Barrel
NBS 16″ .223 Wylde Lightweight Contour 1:8 Midlength 41V50 Barrel – Parkerized
NBS 16″ .223 Wylde 1:8 Parkerized Carbine Length Barrel
NBS 14.5″ Mid-Length 5.56 NATO 1:7 Complete Upper w/ Front Sight Base
NBS 14.5″ 7.62×39 1:10 Carbine Length Heavy Contour AR-15 Barrel – Parkerized
NBS 14.5″ 5.56 NATO Govt. Profile 1:7 Carbine 41V50 Barrel – Black Nitride
NBS 14.5″ (16″ Overall) Mid-Length 5.56 NATO 1:7 Complete Upper w/ FSB and Pinned VG6 Precision Epsilon Muzzle Brake
Alpha AR-15 Lower Build Kit
16″ Mid-Length Bare Bones Barreled Upper Combo Kit
NBS Mil-Spec Carbine Receiver Extension (Castle) Nut
NBS 16″ Slick Side Billet 5.56 416R Stainless Midlength 1:7 M-LOK Complete Upper
NBS Slick Side Billet Upper Receiver