C Products AR-15 5.56 20 Round Stainless Steel Anti Tilt Magazine has an anti tilt follower to decrease the chance of a misloading. Made from 400 series stainless steel, this magazine weighs more than the standard aluminum magazines, but it is much more durable. The durability of this stainless steel magazine will keep your gun cycling in the harshest of environments. This 20 round magazine has been made to the standards of US military and can be used in competition matches. The self lubrication system in the anti tilt magazine keeps it running correctly without needing to disassemble. Weighs 4.08 ounces.