I knowthis isnt carry related but i figured someone here has some know how on this. Im lookng to manf. my own suppressor after receiving my tax stamp back. Im filling out the form 1 and im unsure of how to answer a few of the questions.

Part 4d Model
Part 4e Length of barrell
Part 4f Overall
Part 4h Additional description

Do i need to fill in any of these if they dont apply ?

Do i leave it blank or put N/A in the slot ?

Do they want an overall length on the suppressor ?

What do u normally fill in for additional description ?

This is my first ATFE application and this is all new to me.

Thanks up front