12.7×42 (.50 cal Beowulf) Complete Upper Receiver 18″ Barrel

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$485.00

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Product Description

12.7×42 Complete Upper Receiver (50 Beowulf)

This 12.7×42 Complete Upper Receiver is built by J-5 Tactical using only quality American made parts. This is a complete, AR-15 12.7×42 complete upper receiver with an 18 inch barrel that is fully assembled and ready to perform without hesitation. All J-5 Tactical 12.7×42 .50 cal Beowulf Complete Upper Receivers are tested prior to shipping. Trust J-5 Tactical Supply to provide you with a quality 12.7×42 Complete Upper Receiver.

1 – Complete BIG BORE upper receiver
            * larger ejection port, with forward assist.
1 – 18″ parkerized 12.7×42 barrel
1 – 15″ M-lok free floating hand guard and barrel nut
1 – Timber Creek Muzzle Brake
1 – Micro .936 gas block
1 – Stainless steel gas tube (carbine length)
1 – Bolt Carrier Group
1 – Mil-Spec Charging handle
*We test fire with the Lancer and properly modified GI mags.
*There may be slight variations in handguard style depending on current stock and availability*
The .50 Beowulf is an elephantine round designed to increase stopping power of an AR-15-platform rifle by a factor of 10 billion or so. The cartridge is just short enough to fit in a standard AR magazine, although for obvious reasons (it’s fat) it won’t double stack like .223 Rem./5.56 NATO cartridges. Developed by Alexander Arms, this cartridge is a straight-wall case topped with, you guessed it, a .50-caliber projectile. So that it can use a 6.5 Grendel type 2 bolt face, the case rim is rebated, or smaller than the case body. This not only allows use for a “more standard” bolt, but it also allows the bolt to have enough metal on it to withstand pressure over time and use.
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