5.56 Complete Uppers
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BC-15 | 5.56 NATO Left Side Charging Right Eject Complete Upper | 20" Black Nitride Heavy Barrel | Rifle Gas System | 1:7 Twist | MLOK Split RailSpecial Price $253.95 Regular Price $349.99
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BC-15 | 5.56 NATO Left Side Charging Right Eject Complete Upper | 16" Parkerized Barrel | Mid-Length Gas System | 1:7 Twist | MLOK Split RailSpecial Price $239.95 Regular Price $304.99
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BC-15 | 5.56 NATO Left Side Charging Right Eject Complete Upper | 16" Parkerized M4 Barrel | Mid-Length Gas System | 1:7 Twist | MLOK Split RailSpecial Price $224.95 Regular Price $304.99
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BC-15 | 5.56 NATO Left Side Charging Right Eject Complete Upper | 4.5" Parkerized Heavy Barrel | Pistol Gas System | 1:7 Twist | MLOK Split RailSpecial Price $264.95 Regular Price $339.99
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BC-15 | 5.56 NATO Left Side Charging Right Eject Complete Upper | 16" Parkerized M4 Barrel | Carbine Gas System | 1:8 Twist | MLOK Split RailSpecial Price $224.95 Regular Price $304.99
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BC-15 | 5.56 NATO Side Charging Upper Assembly | 10.5" Stainless Contour| 1:8 Twist | Stainless 416R Pistol Length Gas System | MLOK Split RailSpecial Price $198.95 Regular Price $269.99
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BC-15 | 5.56 NATO Upper Assembly | 10.5" Stainless Contour | 1:8 Twist | Stainless 416R Pistol Length Gas System | MLOK Split RailSpecial Price $198.95 Regular Price $269.99
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BC-15 | 5.56 NATO Forged Complete Upper Assembly | 20" Black Nitride Government - 0.750 | 1:7 Twist | 4150 Rifle Length Gas System | MLOK | 15" Split RailSpecial Price $228.95 Regular Price $314.99
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BC-15 | 5.56 NATO Forged Upper | 16" Parkerized Heavy Barrel | 1:7 Twist | Carbine Length Gas System | MLOK Split RailSpecial Price $199.95 Regular Price $269.99
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BC-15 | 5.56 NATO Bolt Action Style Upper | 8.5" Parkerized M4 Barrel | 1:7 Twist | Pistol Length Gas System | MLOK Split RailSpecial Price $204.95 Regular Price $279.99
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!