ProMag AR15/M16 .223/5.56x45mm, 20 Rounds, Black Polymer Md: COL-A9B
A 20-round magazine for AR-15 / M16 rifles and carbines. The magazine body and follower are constructed of a proprietary DuPont Zytel based polymer to ensure a long service life. The springs are made from heat treated Chrome-silicon wire for increased reliability and smooth feedinG.
