Hexmag magazines are made from durable, lightweight polymer material and are designed to function perfectly in most AR-15/M4 compatible rifles. They feature a raised hexagon pattern for superior grip and secure handling, a USGI spec stainless steel spring and an anti-tilt follower. The tool-free latch plate design makes disassembly fast and easy. The Hexmag HexID color identification system makes ammo recognition simple. The Hexmag True Riser System works with the complete line of HexID System Accessories. The Riser System allows for normal disassembly and cleaning and the standard 30 round body looks natural in your AR rifle and is 100% ammo pouch compatible Hexmag has included additional space on the riser for storage in place of reduced capacity. After all why sell a product that is mostly empty space. The Hexmag riser system allows items to be wrapped around the riser and reinserted back into the magazine. The hexagon hole is not only a decorative feature but a place to secure line. So every Hexmag True 10 and 15 round magazine riser has some capacity for storage. Having the ability to carry around a short length of paracord is built right into the magazine. Hexmag 10 and 15 rd magazines are the magazines of choice for your survival gear.