This is a Odin Works Mag Release known as the XMR, model ACC-XMR2-BLK.
Shooters wanted an ODIN Works XMR (eXtended Magazine Release) that worked with Magpul BAD levers. Machined from billet 6061 aluminum featuring the ODIN boomerang cuts" the XMR 2 is the one accessory every AR with or without a BAD lever needs. The XMR 2 is larger than a mil spec button making it easily accessible by all shapes and sizes of hands and fingers. Works with both AR15 and AR10 lower receivers. Easy install that takes minutes.
Features:
Compatible with BAD Lever. Will not work with anti-walk pins without modification to the XMR2
.1 oz (including paddle, button, and screws)
Large surface area for quick magazine reloads
Easy to reach
Ergonomic design
Release magazine without changing grip or position
Contoured for positive depression and reduced slip
