CMMG FN FiveseveN Magazine Extension, Adds 10 Rounds

30 rounds in your FN FiveseveN pistol! This is a MUST HAVE item for all 5.7 owners. Extremely reliable, and super easy to install. We have put literally thousands of round thru Five7's wiht these extentions, and not a single failure or problem. We HIGHLY recemmend this product.
5.7 10rd Mag Extension. The ultimate upgrade to your 5.7x28 pistol. Simply remove floor plate, inspect factory mag opening for burrs (remove burrs as necessary) install extension, insert spring and add floor plate. Installation takes only seconds and does not permanently alter factory magazine. Chrome silicon spring is salt water resistant and will not take a set (allows you to leave your magazine filly loaded for extended periods with no loss of 'spring power'.
Sold per EACH. Package includes all you need to easily install the extention onto your FiveseveN magazine (magazine not included). Gun and additional items not included.

---

• Category : Magazines and Accessories
• Caliber : 5.7mmX28mm
• Capacity : 10 rd
• Finish : Black
• Model : Five-SeveN
• Type : Magazine Extension
• Model Fit : FNH Five-seveN
• Brand Fit : FNH