In order to make their AR-15 Magazine, Hexmag took a 30-round magazine and altered the internal composition to mimic a shorter round magazine. The patent-pending Hexmag Ture product line uses a riser and a shorter spring in place of their standard 30-round spring, requiring no pins or limiters from the user. Despite the changes, the system allows for normal disassembly and cleaning and looks natural in your AR rifle and is ammo pouch compatible. The unique riser system of the Hexmag AR-15 Magazine allows items to be wrapped around the riser and inserted back into the magazine. The hexagon hole is not only a decorative feature, but a place to secure line. This magazine gives you the ability to carry around a short length of Paracord right into the magazine. Covered by Hexmags Lifetime Warranty.