"Holes: Haha, noticed the flash hider eh? Well, my plan is to either make my own one of these days and that's the reason I didn't paint it. Speaking of which, anyone know where I could buy a thread and die set and what pitch/thread I would need to get? "
M15x1 tap. Ebay seller in china sells them cheap, also victor machinery exchange. They are coming from the same place.
"Question: Having the bipod that far back... what benefit is there to that? "
See the build thread (http://www.militaryfirearm.com/Forum...ild-Retro-PSG1) for details, but the barrel is entirely free floated. All the weight the bipod supports rests on the trunnion. Only a few parts weren't home made. There is a much more detailed build thread on the weaponsguild forum in the "builders challenge" contest area.