The ProMag AR-15 Lower Receiver Vise Block (brand part no. PM123) gives builders and armorers a genuine third hand for working on and installing parts on AR-15 and M-16-pattern lower receivers. The block clamps securely into a bench vise, and the lower receiver’s magazine well is then inserted onto the block, where it’s held firmly in place by the magazine catch. Constructed of black, injection-molded polymer, it’s a simple, effective accessory that makes tasks like installing pins, springs, and trigger components dramatically easier and safer.

Key Specifications

• It’s built to fit AR-15 and M-16-pattern lower receivers.
• Constructed from black, injection-molded polymer for durability without marring the receiver.
• It clamps into a bench vise and locks into the magazine well via the magazine catch.

Frequently Asked Questions

How does the vise block hold the receiver? It’s inserted into the magazine well and held in place by the magazine catch, while the block itself clamps into a bench vise.

What is it made from? Black, injection-molded polymer, chosen to avoid marring the receiver’s finish.

Buy the ProMag AR-15 Lower Receiver Vise Block

A simple, effective third hand for any AR-15 build or maintenance session, this vise block is a smart shop addition. Order it from our ProMag gunsmithing tools lineup and our Lubbock, Texas team will get it shipped quickly.