Magpul AR-15 BEV Block

Manufactured by Magpul Industries
Manufactured by Magpul Industries
57 Reviews
Click Here for Price $45.08 $47.45

In Stock

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The Barrel Extension Vise is an all-in-one, compact vise block for the AR-15/M4. Takes the worry out of applying torque to your upper when installing and removing barrel nuts and muzzle devices by engaging the barrel extension with solid steel lugs and a full-length support shank to prevent flexing. This prevents torque from being transferred to the softer aluminum receiver.

  • Provides support for all AR-15/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
  • Weight: 11.2 oz
Mounts securely in a vise and provides support for both billet and forged upper receivers. Steel hardness is optimized for durability yet won't damage 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 an included pin keeps the upper receiver in proper position. The BEV may also be turned over and used as a mag well vise block to support the lower receiver during maintenance, etc.

Magpul continues to grow and develop based on innovation, simplicity, and efficiency. At Magpul, mission driven requirements inform their product design, materials, and manufacturing, focusing on efficiency without sacrificing quality or performance.
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Manufacturer.Magpul Industries
TypeAction Block
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 go to

Ratings & Reviews

57 reviews


Combat Optics Tool


So much nicer and easier to use than the calm shell model.

excellent tool


solid construction, good design. holds the rifle very well.

Great tool!!


The BEV Block has been a fantastic tool for torquing the barrel nut, attaching a muzzle brake and working on my lower receiver. If you need a tool for these tasks you should definitely consider the BEV block!

Excellent tool


The block works great. They've combined the Reaction Rod with a mag well block into one rock solid tool.

Great Armorer's Tool


The Magpul BEV Block works great on my AR-15 rifle. It fits solidly in the upper for any work I need to do on the barrel or compensator. Flip it over in the vise and it holds the lower (mag well) too. I want to thank Primary Arms for applying a coupon code that I missed on a previous purchase to my purchase of the BEV Block.

Excellent product


This is a great tool, very well built and well designed. Magpul is a great company and makes quality products. Very happy with this purchase. Primary Arms is an excellent vendor with excellent customer service and very fast shipping. Thank you.

Multi use


Used it to build my lower and upper with no problems. Easy to use and a great tool.

great tool


Was looking at multiple tools (Lower action block and a Geissele reaction rod. This one tool does it all for WAY less money!



What more can I say.......its Magpul. Primary Arms has most things in stock and great to deal with.

Doesn't lock in the upper like I hoped


When torquing barrels on uppers with loose pin slots, I had hoped that the way the BEV block locks in the upper it would prevent the barrel from canting when torquing. It did not. However, this is still a much better way to torque barrels than the clamshell method and is a low cost/high value alternative to the Geissele reaction rod.