USED CMMG FNH FiveseveN 10 Round Mag Extension Kit.
I bought this just to try it out, but found out that you need to sand and debur the magazine interface to get this extension to run reliably and I didn't want to mess with that.
The extender and spring were used for maybe two range outings, and look like new.
I paid $25 new, am selling used for $10!
I can meet in the Greater Seattle area, or ship for 2 bucks more.
Cash or Paypal accepted.
Happy New Year!
I bought this just to try it out, but found out that you need to sand and debur the magazine interface to get this extension to run reliably and I didn't want to mess with that.
The extender and spring were used for maybe two range outings, and look like new.
I paid $25 new, am selling used for $10!
I can meet in the Greater Seattle area, or ship for 2 bucks more.
Cash or Paypal accepted.
Happy New Year!
Last Edited:
