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MAGPUL AR15 BEV Block MAGPUL AR15 Armorers Wrench

The BEV Block (Barrel Extension Vise) is an all-in-one, compact vise block tool for AR15/M4 assembly operations of barrel nuts, flash hiders, etc.

Mounts securely in a vise and provides support for both billet and forged upper receivers. Engages barrel extension with solid steel lugs and full length support shank to prevent flexing. Steel hardness is optimized for durability yet won't damage barrel extension, and Magpul Polymer is used for all other engagement surfaces to protect aluminum receiver. O-ring post uses bolt carrier for additional stability and included Pin keeps upper in proper position.

The BEV can also be turned over and used as a mag well vise block to support the lower receiver during maintenance, etc.


  • Provides support for all AR15/M4 upper and lower receivers
  • Solidly engages barrel extension with steel lugs
  • Full-length steel support shank
  • Body made from the same high-quality polymer as other Magpul products


  • BEV™ Block – AR15/M4
    • Weight: 11.2 oz.
Whether you are building or performing maintenance on your all American AR15, use this American-made, solid steel wrench to install or remove; standard sized flash-hiders, rifle or carbine receiver extensions, castle nuts(extended teeth for ASAP plates), and both stock or pin style barrels nuts. Furthermore, you can do it to the proper torque specifications assuming you have a 1/2" torque wrench, just utilize the relevant specification guide that is included.

Last, but not least, use the built in bottle opener to pop-the-top on a cold drink while you sit-back, relax, and enjoy the beauty of your your newest work of art.