Mean Arms Ejectored Exomag AR-15 9mm Luger 32 Round Rifle Magazine 1 Pack Black. Injection-molded polymer construction offers exceptional durability and natural corrosion resistance while the high-tensile steel spring and polymer follower work together to deliver consistent operation under stress. The built-in ejector offers faithful service with standard blowback systems. Better yet this magazine comes equipped with a last-round hold-open feature. No magwell adapter or tools required. Specifications for Mean Arms Ejectored Exomag AR-15 9mm Luger 32 Round Rifle Magazine: Manufacturer: Mean Arms Color: Black Fabric/Material: Polymer Magazine Capacity: 32 Round Caliber: 9mm Luger Gun Make: AR Platform Gun Model: AR-15 Features of Mean Arms Ejectored Exomag AR-15 9mm Luger 32 Round Rifle Magazine:Injection-molded polymer constructionDurable steel springInjection-molded polymer followerBuilt-in ejectorCompatible with STANAG-pattern lower receiversLast round hold-open feature Package Contents: Mean Arms Ejectored Exomag AR-15 9mm Luger 32 Round Rifle Magazine What firearm models does the manufacturer say Mean Arms Ejectored Exomag AR-15 9mm Luger 32 Round Rifle Magazine is compatible with? The manufacturer says that Mean Arms Ejectored Exomag AR-15 9mm Luger 32 Round Rifle Magazine is compatible with AR-15Mean Arms 2105169-32RD: Ejectored Exomag AR-15 9mm Luger 32 Round Rifle Magazine 1 Pack Black