The Ruger® BX-25® High Capacity 10/22® Magazine increases firepower dramatically converting your 22 semi-auto into an effective tactical carbine. Reliable feeding is ensured by a constant-force, stainless steel spring, a poly acetyl anti-tilt follower, and steel magazine feed lips. The feed lips are tested to withstand thousands of rounds without significant wear. The main body is also made of rugged weather-resistant polymer. The magazine can be easily disassembled for cleaning by removing two stainless steel screws. The Ruger BX-25 magazine functions with any factory original 10/22 Rifle, SR-22® Rifle, 22 Charger™ Pistol, .22 LR American Rimfire® Rifle, and .22 LR 77/22® Rifle.