This is a Seekins Precision Magazine Release known as the AR, model 0011510013.
This easy to install" inexpensive" drop in upgrade is perfect for any AR rifle. CNC machined from a solid piece of 6061-T6 aluminum" the Billet Mag Release Button is larger and easier to manipulate than the Mil-Spec version. A diamond texture face and a blind threaded hole keep the lines clean and give it unique styling.
Features:
6061-T6 Aluminum
CNC Machined
Diamond Textured Face