30-round magazineFits AR-308 / .308 Cal AR type rifles using LR-308 (DPMS) or SR-25 pattern magazinesMagazine body constructed of a proprietary DuPont™ Zytel® based polymerInjection molded magazine followerMagazine spring formed from heat treated chrome silicon wireDoes not fit rifles using Armalite..
40-round magazineFits AR-308 / .308 Cal AR type rifles using LR-308 (DPMS) or SR-25 pattern magazinesMagazine body constructed of a proprietary DuPont™ Zytel® based polymerInjection molded magazine followerMagazine spring formed from heat treated chrome silicon wireDoes not fit rifles using Armalite..