Arguy from NC here...

[arguy]

Howdy.  Figured I would join up to get some information on fixing/moding my sons ISSC Mk22.  Im getting ready to go down the .22 AR upper road myself and saw this was a good place to do research.

Thanks for the board.

Mark

Arguy

[techmike]

Welcome Mark!

[asmurff]

Glad to have you!