K10M: AR-15 Magazine, 18 Round,10mm

AR-15 Magazine, 18 round, 10mm Magazine for AR-15 lower receivers
NOTE:
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.

WARNING:
This magazine WILL NOT WORK with the old 10mm piston systems!