Cmmg 10rnd Ext Fn5.7 Fits 20rd Mags

The CMMG 10-Round Extension for FN 5.7 Pistol Magazines increases your magazine capacity by 10 rounds, allowing 20-round capable magazines to function at their designed maximum. This extension serves operators, defensive shooters, and range enthusiasts who rely on the FN 5.7×28mm cartridge for its unique ballistic profile and reduced recoil characteristics. Compatible with FN 5.7 magazines designed for 20-round capacity, the extension provides a straightforward way to maximize firepower without requiring multiple magazines during training or duty cycles.

The 10-round extension kit maintains the dimensional integrity of the original magazine system while adding significant ammunition capacity. At 4.5 inches in length and weighing just 0.13 pounds, the extension adds minimal bulk to your loadout. Installation on compatible 20-round FN 5.7 magazines is straightforward, allowing you to quickly convert existing magazines without additional tools or modifications. The extension preserves the feeding reliability of the base magazine while extending its overall footprint slightly.

This accessory is designed for users running FN 5.7 pistol platforms who prioritize magazine capacity for extended range sessions or tactical training scenarios. The 5.7×28mm platform has gained traction among law enforcement training units and civilian shooters valuing its controllable recoil and specialized ballistics. Whether for duty use, competition preparation, or high-round-count training days, adding 10 rounds per magazine extends your shooting window and reduces reload frequency. Note that this extension is not compatible with newer FN 5.7 magazine variants; verify your magazine generation before purchasing.