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  4. Complete Upper Assembly, 7.5" Parkerized 4150 Steel Heavy Barrel, .300 Blackout, Pistol Length Gas System, 1:8 Twist w/ 7" MLOK
Complete Upper Assembly, 7.5
Complete Upper Assembly, 7.5' Parkerized 4150 Steel Heavy Barrel, .300 Blackout, Pistol Length Gas System, 1:8 Twist w/ 7' MLOK

Complete Upper Assembly, 7.5" Parkerized 4150 Steel Heavy Barrel, .300 Blackout, Pistol Length Gas System, 1:8 Twist w/ 7" MLOK

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Your Price: $290.00
Part Number: ARCU33-2
Availability: In Stock. Free Shipping.
Quantity Price
3 - 5 $261.00
6 - 10 $246.50
11+ $232.00


 This complete upper receiver is chambered in .300 Blackout and machined with M4 feed ramps (both in the lower and barrel extension) and comes with a  BCG and charging handle. This is the perfect upper for your next build.


7.5" Parkerized 4150 Chrome Moly Vanadium Barrel w/ 1:8 Twist

Heavy Barrel Profile

7" MLOK

.300 Blackout Chamber

M4 Flat Top Upper Receiver

Pistol Length Gas System, .750 Diameter Gas Block

BCA Standard BCG

Charging Handle

Bird Cage Flash Hider



Please note: Uppers may only be returned if they are unused and in resellable condition. If the item is defective, ie, does not function, we will accept a return within the 30 day period only.

No FFL required...this part can be shipped directly to your home.


  • NO FFL REQUIRED TO PURCHASE



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