ProMag RM40 Standard 40rd Detachable w/Roller Follower 5.56x45mm Fits AR-15 Black DuPont Zytel Polymer Choke Tubes The premium CPM MagnaCut blade

The premium CPM MagnaCut blade features superior edge retention on both sides of the blade and it opens and retracts with authority

5 mm AUX jack for use of MP3 and mobile devices

and Concealment Claw

This remarkable device maintains the legacy of its predecessor

Featuring the Ballistic E3 reticle

ProMag RM40 Standard 40rd Detachable w/Roller Follower 5.56x45mm Fits AR-15 Black DuPont Zytel Polymer Choke Tubes The premium CPM MagnaCut bladeThis replacement or spare magazine is compatible with your AR 15. It is constructed of DuPont Zytel polymer with an anti tilt roller follower and mag spring formed from chrome silicone wire. Made in the USA.