CMMG 57AFD1E FN FiveSeven 5.7mmX28mm 10 rd Mag Extention Black Magazine

This FiveSeven 1rd mag extension is the ultimate upgrade to your 5.7×28 pistol. Installation takes only seconds and does not permanently alter factory magazine. Chrome silicon spring is salt water-resistant and will not take a set.

Specifications and Features:

• Caliber: 5.7mmx28mm
• Capacity: 10rd
• Finish: Black
• Model: FiveSeven
• Type: Magazine Extension
• Model Fit: Five-seveN
• Brand Fit: FN
• Capacity: 10rd