Elite Tactical Systems HK VP9 9mm 40 Rounds Pistol Magazine Clear 40. Their mags come with enhanced features like non-tilt followers" creep-resistant feed lips and clear body allowing you to see count and ammo type" leaving nothing to chance. Specifications for Elite Tactical Systems HK VP9 9mm 40 Rounds Pistol Magazine: Manufacturer: Elite Tactical Systems Gun Make: Heckler & Koch Gun Model: Heckler & Koch VP9 Caliber: 9mm Luger Magazine Capacity: 40 Round Features of Elite Tactical Systems HK VP9 9mm 40 Rounds Pistol Magazine Translucent polymer construction Steel wire spring Injection-molded polymer follower Creep-resistant design Lifetime warranty Package Contents: Elite Tactical Systems HK VP9 9mm 40 Rounds Pistol Magazine What firearm models does the manufacturer say Elite Tactical Systems HK VP9 9mm 40 Rounds Pistol Magazine is compatible with? The manufacturer suggests that Elite Tactical Systems HK VP9 9mm 40 Rounds Pistol Magazine is compatible with Heckler & Koch VP9Elite Tactical Systems HKVP9-40: HK VP9 9mm 40 Rounds Pistol Magazine Clear 40