Anyone know what has to be done to a FN PS90 to make NJ compliant? And which type FFL can accept the transfer and alter it? Thanks

Mags modified to 15 rounds

 

I think the PS 90 has a FH, so it needs to be removed and a MB installed

and if I'm not mistaken, the barrel is less than 16" w/o the FH/MB so it needs

to be welded as well............ 

IMO, the PS90 has a thumb hole stock, so a flash hider is okay.

This was my take as well. And IIRC the FH is not simply just a FH. In other words you cant just swap it out like an AR. The barrel system on a P/PS90 is unique.