Olympic Arms has solved the problem of unreliable pistol caliber AR-15 magazines. These polymer magazines by Olympic Arms fit perfectly into the magazine well on a standard AR-15 lower receiver without the need for receiver blocks. This alleviates common problems with pistol caliber AR-15's typically requiring users to modify their magazines, firearms or both in order to achieve reliable functioning.
Specifications and Features:
Olympic Arms Magazine K45M
17 Round Capacity
AR-15 lower receivers
Note from Olympic Arms: The feed ramp in the Pistol Caliber Upper Receivers has changed slightly over the years and the magazine may not work in all Upper Receivers without minor modification. If you purchase a magazine and it doesn't feed properly send in your upper receiver to the factory to perform this modification free of charge.