ProMag PM123 Vise Block AR-15 M16 Black Polymer Compatible Lower Receiver

The ProMag PM123 AR-15/M16 Lower Receiver Mag Well Vise Block is an injection-molded black polymer vise block that inserts into the magazine well and is secured by the magazine catch, holding the lower receiver firmly in your vise during cleaning or maintenance. Made in the USA and backed by a lifetime warranty, it offers a secure, no-slip solution for working on AR-15 and M16 platform lowers.