The XPRs detachable box magazine is constructed of a light yet rugged polymer and securely latches at both the front and rear for added security and to endure feeding reliability. The magazine is a slick and slim single stack design that feeds cartridges in a straight line right into the chamber. Nothing could be more straight-forward. Specifications for Winchester XPR .270WSM /.300WSM/.325WSM Detachable Box 3 Round Rifle Magazine: Manufacturer: Winchester Color: Black Fabric/Material: Polymer Magazine Capacity: 3 Round Caliber: 6.8 Western, 6.5mm PRC, .270 Winchester Short Magnum, .300 Winchester Short Magnum Gun Make: Winchester Gun Model: Winchester XPR Package Contents: Winchester XPR .270WSM /.300WSM/.325WSM Detachable Box 3 Round Rifle Magazine The Winchester Win Xpr Magazine .270wsm/ .300wsm/.325wsm Detachable Box is a quality addition to the Winchester lineup. For more great deals on Rifle Magazines by Winchester, please browse our Winchester Magazines page.