Magpul Black AR-15 BEV Block Vise Support Tool

The Magpul BEV Block is a barrel extension vise block for AR-15/M4 upper receivers. It clamps in a vise and holds the upper during barrel nut and flash hider work. It works with billet and forged uppers.

Solid steel lugs engage the barrel extension, and a full-length steel shank keeps the receiver from flexing. That puts the torque on the barrel extension instead of the receiver. An included pin keeps the upper in position.

Flipped over, it works as a magazine well vise block for the lower receiver. All engagement surfaces are covered in Magpul polymer to protect the receiver finish. Keep the workpiece supported and follow the component manufacturer's torque guidance when the maintenance job involves threaded parts. Browse more gun cleaning and maintenance.

• Holds AR uppers by the barrel extension
• Steel lugs and full-length steel shank
• Doubles as a lower receiver block
• Polymer protects the finish