Promag AR-15 / M16 5.56MM 40-Round Magazine


Promag AR-15 / M16 5.56MM 40-Round Magazine


SKU: RM-40


  • AR-15 / M16 Magazine 

  • 5.56mm NATO 

  • 40 Rounds 

  • Anti-Tilt Roller Follower 

  • Anti Fatigue Chrome Silicon Spring 

  • Black Polymer 

Shipping Restrictions



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!