AR 40RD 308 BLACK POLY PROMAG

• 40-round magazine
• Fits AR-308 / .308 Cal AR type rifles using LR-308 (DPMS) or SR-25 pattern magazines
• Magazine body constructed of a proprietary DuPont™ Zytel® based polymer
• Injection molded magazine follower
• Magazine spring formed from heat treated chrome silicon wire
• Does not fit rifles using Armalite pattern magazines
• Made in USA