This is a Stainless Steel 15-round blocked 30-round magazine for AR-15 rifles in .223/5.56mm
Improving on the classic USGI AR-15 magazine, Ammo Storage Components’ stainless steel mags offer enhanced durability and longevity that’s hard to beat. Manufactured 100% from start to finish in the U.S.A., ASC’s impressive aftermarket magazines are the perfect upgrade for your Colt-pattern AR-15/M4 rifle kit …
These 30-round magazines come with an installed limiter that reduces capacity to 15 total rounds (limiter can be permanently affixed). Manufactured from durable 410 stainless alloy, heat-treated for maximum endurance and reliability, chemically-treated to resist corrosion, then finished with proprietary Marlube that wears into the magazine over time.
Engineered for quick reloads, ultra-reliable feeding, and peak performance.