5.56 Complete Uppers
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BC-15 | 5.56 NATO Bolt Action Style Upper Assembly | 16" Black Nitride M4 Barrel | 1:8 Twist | MLOK Split RailSpecial Price $219.95 Regular Price $309.99
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BC-15 | 5.56 NATO Bolt Action Style Upper Assembly | 16" Parkerized M4 Barrel | 1:8 Twist | MLOK Split RailSpecial Price $229.95 Regular Price $319.99
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BC-15 5.56 NATO Bolt Action Style Complete Upper Assembly, 10.5" Stainless Contour Barrel, 1:8 Twist, 9.5" M-LOK RailSpecial Price $189.95 Regular Price $319.99
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BC-15 5.56 NATO Bolt Action Style Complete Upper Assembly, 24" Stainless Heavy Barrel, 1:8 Twist, M-LOK RailSpecial Price $249.26 Regular Price $349.99
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BC-15 5.56 NATO Bolt Action Style Complete Upper Assembly, 10.5" Parkerized Contour Barrel, 1:8 Twist, 9.5" M-LOK RailSpecial Price $189.95 Regular Price $264.99
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BC-15 5.56 NATO Bolt Action Style Complete Upper Assembly, 8.5" Parkerized Contour Barrel, 1:7 Twist, 5.3" M-LOK RailSpecial Price $179.95 Regular Price $249.99
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BC-15 | 5.56 NATO Bolt Action Style Upper Assembly | 16" Black Nitride Contour - 0.750 | 1:7 Twist | MLOK | 15" Split RailSpecial Price $218.95 Regular Price $349.99
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BC-15 5.56 NATO Bolt Action Style Complete Upper Assembly, 18" Black Nitride Stainless Heavy Barrel, 1:8 Twist, M-LOK RailSpecial Price $237.95 Regular Price $334.99
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BC-15 5.56 NATO Bolt Action Style Complete Upper Assembly, 20" Black Nitride Heavy Barrel, 1:7 Twist, 15" M-LOK RailSpecial Price $248.95 Regular Price $349.99
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BC-15 5.56 NATO Bolt Action Style Complete Upper Assembly, 4.5" Parkerized Heavy Barrel, 1:7 Twist, 4" M-LOK RailSpecial Price $221.35 Regular Price $309.99
Shop & save on high-quality 5.56 complete uppers from Bear Creek Arsenal at an affordable price! 5.56 NATO is the perfect caliber for self-defense, plinking, and varmint hunting due to its 556 ammo availability, reliability, and low recoil. Our 5.56 uppers include everything you need to start shooting including a BCG, rear or side charging handle, upper receiver, and barrel, all compatible with mil-spec AR-15 lowers. Explore our selection of 5.56 complete uppers or discover our 5.56 barrels to customize your next build today!