Lancer Systems X-Cinch Magazine Coupler Features The Lancer Systems X-Cinch magazine coupler is molded from durable reinforced nylon a material chosen for its combination of light weight and resistance to cracking under the repeated stress of magazine changes. The coupler s locking ribs are designed to mate precisely with the surface texture of factory Sig Sauer MPX magazines ensuring a snug rattle-free connection between the two joined mags. This fit is critical for keeping both magazines aligned and secure during vigorous movement or rapid transitions in competition or training. A tool-less thumbscrew assembly means the coupler can be installed or removed in seconds without needing a separate tool on hand. By joining two factory MPX magazines together this coupler effectively doubles a shooter s on-hand capacity while keeping a fresh magazine immediately at hand for a fast reload. This is particularly valuable in competitive shooting sports where reload speed directly affects overall stage time. Because the coupler is purpose built for the MPX s specific magazine geometry it avoids the loose fit or poor alignment that can occur with universal coupling systems. The Lancer Systems X-Cinch coupler is a simple effective upgrade for any Sig Sauer MPX owner focused on faster reloads. Lancer Systems X-Cinch Magazine Coupler Specifications Manufacturer: Lancer Systems Model: X-Cinch Material: Polymer Compatible Hosts: Sig Sauer MPX Type: Magazine Coupler Available At: GrabAGun