This is a 10-round 9mm MasterPiece Arms MPA30T magazine. Load up and hit the range with the MasterPiece Arms MPA 10-round magazine. Featuring a durable, yet lightweight polymer body, the MPA Defender magazine offers superior strength and lasting performance in harsh environments. Additionally, the removable floorplate allows for hassle-free disassembly for cleaning and maintenance. The rugged steel wire spring and controlled-tilt polymer follower work together to provide smooth feeding with proper cartridge alignment for reliable service in high-stress shooting scenarios.