50 BEOWULF / 12.7x42 UPPERS (AR15)

50 Beowulf AR15 Upper Assembly / 50 Beowulf Complete Upper Receiver for AR15

The 50 Beowulf (12.7x42mm) is the largest caliber available for the AR15 and it has the take-down power for deer, moose, and black bear inside 150 yards - think of it as a hotrod, 1800 fps, 12-guage slug for your AR15. For close quarters combat, the 400-600 grain projectile has tremendous stopping- and penetrating-power. The rebated cartridge rim is compatible with the 6.5 Grendel (Type 2) bolt carrier group, and the cartridge length and diameter are compatible with large bore, single stack AR15 (450 Bushmaster) magazines.

AR15Parts.com components are sourced from top US manufacturers including Aero Precision, Anderson Manufacturing, Shaw Barrels, Swan Machine, Wilson Arms, Wilson Combat, ZRO Delta, and others. Each upper assembly has options to select Rail, Muzzle Device, Bolt Carrier Group (BCG), Charging Handle, and Magazine. Additional parts are available individually on our website.



Sort by: