Magpul BEV Block for AR-15/M4


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SKU: MAG536 UPC: 873750000145

Product Description

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.

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

The BEV can also be turned over and used as a mag well vise block to support the lower receiver for maintenance or other operational needs.

  • Provides support for AR-15/M4 uppers and lowers
  • Solidly engages barrel extension with steel lugs
  • Full-length steel support shank
  • The body is constructed of the same high-quality polymer as other Magpul products
  • Made in the USA.




Technical Information

Color / Pattern

Firearm Compatibility


Polymer, Steel

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit

Customer Reviews

Based on 1 review
Keven K.

Product works as advertised.
thank you