Made in the USA The 7.62×51 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. It features true 25-round capacity constant-curve body anti-tilt follower and transparent MagLevel windows to allow rapid visual identification of approximate number of rounds remaining. NOTE: This item is also compatible with Armalite AR-10A Colt LE901-16S CORE Rifle Systems CORE30 JP Enterprises LRP-07 KAC SR25 LaRue OBR Les Baer .308 LMT .308 MWS LWRCI REPR Mega Arms MATEN Noveske Gen III N6 POF P-308 Ruger SR-762 Ruger Precision Rifle S&W M&P10 SIG716 others.