High cap mag extension

[herky]

My current project is to build a Mech tech PCC based on a Para hi cap 9mm lower.  The major hold up is finding a mag that will hold 35/36 rounds (or more than 32).  Can anyone suggest an extension that will fit on a 170 MBX or Para mag?  I currently use a Glock based Mech tech, good accuracy and reliability, but the trigger leaves something to be desired.  Any help would be appreciated.

[dwzuspsa]

Call Tim at Taccom and ask if his glock mag extension can be retro fitted for the para mags