This is a 15-round 9mm Archon Type B magazine from PTR Industries. The Archon Type B 15-round magazine is perfect for tactical training, plinking at the range, or everyday carry. Constructed from robust steel with a corrosion-resistant finish, this OEM magazine is designed to stand up to the demands of frequent use in challenging environments. The polymer follower and steel spring combine to deliver proper cartridge alignment and reliable feeding for dependable performance in high-stress shooting applications.