here is mine that I recently got. seller parted it out and this is all I got, no bolt inside either. trying to put it back together and learning a lot about roller locks on this forum. first lesson was how darn expensive the parts are.
Adding on to the thread, because while I'm sure many others have been posted here I figured I'd add to the pile! Here's my Brethren Arms mp5a3, HK Sl8 converted to g36 specs by Tom Bostic (highly recommend his work), another BA mp5, but a k configuration in 10mm and one of my vp9's. Got a Tom Bostic g36 receiver waiting to be built as an mg36 clone and then I should be set! (for now...)
Range time, getting a solid zero. Coastal suppressor, quiet with 147 gr.