300 blk

I'm starting to build a 300 blackout. I want this gun to be an SBR and eventually suppressed. I want to use it for hunting close and I'd like to shoot subsonic plus suppressed. My questions are since I plan on having a 9.5" barrel plus a ~8.5" suppressor plus the stock 1) Will it have to be...

I just purchased this gun for 1700$ and apparently its a one of a kind gun. I was wondering if anyone else had seen or heard of one. The story the guy that sold me the gun told me is that the previous owner was a family member of the PWS owner and was given the gun. The gun came with a PWS hard...