PRO-MAG AR-15 ROLLER FOLLOWER MAGAZINE – BLACK, 5.56, 30/RD

PRO-MAG AR-15 ROLLER FOLLOWER MAGAZINE – BLACK, 5.56, 30/RD
DESCRIPTION:
? 30-round magazine
? Fits AR-15? 5.56mm rifles
? Magazine body constructed of a proprietary DuPont? Zytel? based polymer
? Patented anti-tilt Roller follower
? Magazine spring formed from heat treated chrome silicon wire
? Made in USA