These magazines were designed for professional shooters and law enforcement personnel whose lives depend on a perfect shot every time. Expertly machined for exceptional quality and guaranteed to feed and function for every shot. ProMag magazines include a lifetime guarantee, if you ever have a problem with their magazines; simply return them to ProMag for replacement. When you need a cost effective aftermarket replacement mag that you know you can count on, you need a ProMag!
This magazine is made from Technapolymer with an anti tilt roller follower and anti fatigue chrome silicon spring for flawless operation. The anti tilt roller follower will provide reliable feeding and the anti fatigue spring will work even after being preloaded and stored for up to 6 years!

Specifications and Features:
ProMag Rollermag AR-15 Magazine RM-20
5.56 NATO/.223 Remington
20 Rounds
Smooth Feeding
Anti Tilt Roller Follower
Anti Fatigue Chrome Silicon Spring
Technapolymer Magazine Body
ProMag Lifetime Warranty
Black