Hello, I'm new to GSG firearms and this forum. I recently picked up an SD & PK and after several hours reading post I want to make sure I have this right...... If I want to add a vertical hand grip or retractable stock to the PK I have to fill out a Federal form and pay $200 each?
Thanks,
David

If you add a stock to the PK it becomes an SBR (short barreled rifle) or if you add a vert. foregrip in becomes an AOW (any other weapon), either of which are NFA items and have to be registered with the ATF and a $200.00 tax stamp has to be purchased. If you add both items you are creating the SBR, the vertical foregrip is legal on a rifle so once the pistol is registered as an SBR. You would only have to pay the transfer tax one time for any one firearm. The exception would be if you added a suppressor, it would also be registered with the transfer tax paid on it. You could move it from weapon to weapon with no problem (as long as it fit of course) because the suppressor itself is what is registered.

skipm, Thanks for the info