This FiveSeven 10rd mag extension is the ultimate upgrade to your 5.7x28 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.
- Brand:
- CMMG
- SKU:
- MAGFN-57AFD1E
- UPC:
- 852005002028
- Minimum Purchase:
- 1 unit
