This is an original equipment manufacturer replacement or spare magazine for the Omni Hybrid AR-15 .410 Shotgun. It's constructed from durable polymer and holds 15 rounds of 2.5" Shotgun Shells. When you choose OEM magazines, you can be assured of getting the same quality materials and attention to manufacturing as the magazines originally supplied with your firearm. If you need a spare magazine, you need this Omni Hybrid AR 15 .410 Shotgun magazine.