12.7×42 16″ Complete Upper w/ 10rd magazine (Beowulf compatible)

$479.99 $449.99

  • 17.2×42 (Beowulf compatible) Caliber
  • 16″ Nitride Heavy Barrel
  • .936 Carbine length gas system
  • Parkerized Bolt Carrier Group
  • NEW 15″ Mlok Free Float handguard
  • NEW “Big Foot” Charging Handle
  • Pain inducing recoil

3 in stock

Have you ever had the urge to fire sausage links from you AR15? Well here’s your chance!
Complete 12.7×42 (50 Beowulf Compatible) upper is ready to rock with included E-Lander larger caliber magazine to insure proper feeding!

Features a 16″ Nitride 1:20 Heavy Barrel with a .936 Carbine length gas system.

Topped with a US Tanker brake aids in taming some of that recoil.

Included in the package is a Nickel Boron MPI BCG and standard charging handle.
BCG Featured a Alexander Arms extractor!

Each upper is assembled and head spaced by me personally.

Don’t forget I also sell premium 17.2×42 ammo from XCaliber!

This upper has substantial recoil so please be prepared.
While I have attempted to weed out any functionality issue with these doing much testing I have found that there variables that may need to be adjusted in order to achieve a perfectly running rifle.
Some magazines will just not function properly and having a 12.7×42 Caliber specific magazine is very helpful.
Most lower setups will work with this upper, however I would not recommend using a poly lower with this rig. Adjusting buffer and spring weight maybe necessary.
If you have any questions please feel free to email me and I can talk to you about any upper you might have a question with.


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