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Complete uppers are helpful for those that are looking to swap to a new caliber on their AR-15 or AR-10 quickly. Own a 5.56NATO AR-15? Buy a .300 Blackout complete upper below and attach to your existing lower. Same with AR-10. Already have a .308 Win AR? Buy a 6.5 Creedmoor upper below and start blasting.
A complete upper is exactly as it sounds. Complete. That means it comes with the upper, barrel, muzzle device, handguard, and most times bolt carrier group. There are many different calibers that allow for quick swap onto your existing AR-15/AR-10 lower. Check out all of our complete uppers below and start your next build or upgrade your existing AR.
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BCA-15 7.62×39 AR-15 Pistol Complete Upper 7.5″ Barrel, 7″ MLOK Side Charger w/BCG
$329.99This BCA AR-15 complete 7.62×39 pistol length upper has a 7.5″ heavy barrel with a parkerized finish, and features a 1:10 twist rate, with a pistol length gas system. It…
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Complete AR-15 Upper Receiver w/BCG .350 Legend, 20″ Parkerized Heavy Barrel, 1:16 Twist, Carbine Length Gas System, 15″ MLOK Rail|Side Charging Upper (Gen 2)|New MLOK
$399.99This BCA AR-15 complete 350 Legend rifle length upper has a 20″ heavy barrel with a parkerized finish, and features a 1:16 twist rate, with a carbine length gas system….
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.308, 18″ Parkerized SOCOM Barrel, 1:10 Twist, Mid Length Gas System, 15″ MLOK Split Rail|Sporter Upper w/BCG
$499.99This BCA AR-10 complete .308 Sporter rifle length upper has a 18″ Parkerized mid weight (SOCOM) barrel, and features a 1:10 twist rate, with a mid length gas system. It…
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BCA AR-10 .308WIN Complete Upper w/BCG 20in 416R SS Heavy Barrel 1:10 Twist MLOK
$449.99BCA AR-10 .308WIN Complete Upper w/BCG 20in 416R SS Heavy Barrel 1:10 Twist MLOK
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BCA AR-15 Complete Upper w/BCG 7.62x39mm Dual Charger 18in Barrel 15in MLOK
$349.99BCA AR-15 Complete Upper w/BCG 7.62x39mm Dual Charger 18in Barrel 15in MLOK
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BCA AR-10 .243WIN Complete Upper w/BCG Black Nitride 20in Barrel 15in MLOK
$349.99BCA AR-10 .243WIN Complete Upper w/BCG Black Nitride 20in Barrel 15in MLOK
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BCA AR-10 6.5 Creedmoor Side Charging Handle 22in 416R SS w/BCG Complete Upper
$419.99BCA 6.5CR 22″ SL RSC CUPPER
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BC-10 | 6.5 Creedmoor Right Side Charging Upper | 22” 416R SS Heavy Barrel | 1:8 Twist | Rifle Length Gas System | 15” MLOK Split Rail
$419.99BC-10 | 6.5 Creedmoor Right Side Charging Upper | 22” 416R SS Heavy Barrel | 1:8 Twist | Rifle Length Gas System | 15” MLOK Split Rail
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BC-10 | .243 Winchester Right Side Charging Upper | 22″ 416R SS Light-weight Barrel | 1:8 Twist | Rifle Length Gas System | 15″ MLOK Split Rail
$429.99BC-10 | .243 Winchester Right Side Charging Upper | 22″ 416R SS Light-weight Barrel | 1:8 Twist | Rifle Length Gas System | 15″ MLOK Split Rail
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BC-10 | .308 Right Side Charging Upper | 16″ Parkerized Heavy | 1:10 Twist | Mid-Length Gas System | 15″ MLOK Split Rail w/BCG
$399.99This BCA AR-10 complete .308 rifle length upper has a 16″ parkerized Heavy barrel, and features a 1:10 twist rate, with a mid-length gas system. It includes a 15″ MLOK…
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BCA AR-10 .22-250 Forged Upper Complete w/BCG 20in. 416R SS Barrel MLOK
$439.99BCA AR-10 .22-250 Forged Upper Complete w/BCG 20in. 416R SS Barrel MLOK
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BCA AR-10 .22-250 REM Sporter Slid Side Complete Upper w/BCG 20in. Parkerized Heavy Barrel 1:14 Twist MLOK
$419.99BCA AR-10 .22-250 REM Sporter Slid Side Complete Upper w/BCG 20in. Parkerized Heavy Barrel 1:14 Twist MLOK
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BCA AR-15 Complete Upper w/BCG 7.62×39 Dual Charging Upper 10.5in Parkerized Heavy Barrel 1:10 Twist 9.5in MLOK
$349.99BCA AR-15 Complete Upper w/BCG 7.62×39 Dual Charging Upper 10.5in Parkerized Heavy Barrel 1:10 Twist 9.5in MLOK
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BCA AR-15 Complete Upper w/BCG .300 Blackout Side Charger 16in. Parkerized Heavy Barrel 1:8 Twist MLOK
$359.99This BCA AR-15 complete 300 Blackout rifle length upper has a 16″ heavy barrel with a parkerized finish, and features a 1:8 twist rate, with a carbine length gas system….
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BCA Complete AR-15 Upper w/BCG 6.5 Grendel Sporter Slick Side 20in 416R SS Heavy Barrel MLOK
$369.99This BCA AR-15 complete 6.5 Grendel rifle length upper has a 20″ heavy barrel with a 416R stainless steel finish, and features a 1:8 twist rate, with a rifle length…
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BCA AR-9 Complete Upper w/BCG 9MM Left Side Charger, Right Side Eject 16in. M4 Barrel, 15in. MLOK
$379.99BCA AR-9 Complete Upper 9MM Left Side Charger, Right Side Eject 16in. M4 Barrel, 15in. MLOK
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BCA BC-15 .350 Legend Side Charging Complete Upper w/BCG 18in. Brl Heavy Barrel 15in. MLOK
$399.99BCA BC-15 .350 Legend Side Charging Complete Upper w/BCG 18in. Brl Heavy Barrel 15in. MLOK
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BCA BC-15 12.7×42 AR-15 Complete Upper w/BCG 16in. Heavy Barrel 1:20 Twist 15in. MLOK
$399.99This BCA AR-15 complete 12.7×42 rifle length upper has a 16″ parkerized heavy barrel, and features a 1:20 twist rate, with a carbine length gas system. It includes a 15″…
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Alexander Arms AR-15 Upper Receiver Kit .50 Beowulf 16.5″ Threaded Barrel with BCG Black
$869.99The .50 Beowulf Upper Receiver Kit is exactly what you expect from a fantastic company like Alexander Arms! Built on their standard specification upper receiver, the 16.5″ barrel has a…
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Del-Ton AR-15 Complete Mid-Length Upper Assembly 16″ 5.56 NATO 1:9 Twist Black DT1023
$469.99Del-Ton complete upper offers a 1 in 9″ twist, 16″ heavy chrome moly barrel, flat top upper, complete bolt carrier and assembly, charging handle, mid length handguards with single heat…
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