Just ordered a pa10 upper & lower, and my main experience is building ar15's. Prolly 20 under my belt at this point with a couple more in the works. So its not my first build. First time with .308 though and im learnin about the differences between manufacturers. I see psa uses toolcraft to make their bcgs. Psa doesnt have any pa10 bcg available so im looking into alternatives. Open to suggestions. Not in a huge rush, so i may wait til there in stock. But not sure of that time line...