A 30-rd Magazine for AR-15 rifles chambered in .223cal/5.56x45mm. Magazine body constructed of heat treated steel with a black oxide finish for durability and harsh use in the field. A Chrome-silicon wire spring and precision molded polymer follower ensure reliable feeding and function. Made in U.S.A. - See more at: https://promagindustries.com/ar-rifle/86-ar-15-223cal-30-rd-blue-steel-magazine.html#sthash.mBJTzyl1.dpuf

A 30-rd Magazine for AR-15 rifles chambered in .223cal/5.56x45mm. Magazine body constructed of heat treated steel with a black oxide finish for durability and harsh use in the field. A Chrome-silicon wire spring and precision molded polymer follower ensure reliable feeding and function. Made in U.S.A. - See more at: https://promagindustries.com/ar-rifle/86-ar-15-223cal-30-rd-blue-steel-magazine.html#sthash.mBJTzyl1.dpuf