The 7.62×51 (.308 Winchester) PMAG 25 M118 LR/SR GEN M3 Window is a lightweight, cost effective, high reliability magazine for SR25/M110 pattern rifles using longer than SAAMI-spec match ammunition up to 2.830″ OAL. Features true 25-round capacity, constant-curve body, anti-tilt follower, snap on Impact/Dust Cover, and transparent MagLevel windows to allow rapid visual identification of approximate number of rounds remaining.