Standard AR15 magazine carrier. Designed and tested to accept MAGPUL, Hex and Lancer polymer magazines, utilizing four (4) points of adjustable retention. *Please Note* This magazine carrier will not accept GI style steel magazines * Our magazine carriers are firearm specific. * Made from durable .080 thickness thermoplastic (Kydex) material. * Vacuum formed on custom HPM in-house molds and CNC cut. * Adjustable retention: HPM sets the retention prior to leaving the shop to our desired retention. However, everyone is different, turn the screw clockwise to increase desired retention and counter-clockwise to reduce the retention. * No two holsters and magazine carriers are exactly alike. Each holster and magazine carrier are individually handcrafted.