Funny. When I saw the second drawing I thought immediately about Ballistic Advantage as I've worked on a few Hanson barrels and absolutely hate the lack of a false shoulder as shims and especially crush washers need to be hand-centered before tightening. First time dealing with one the washer turned into an oval and the job was almost fubar. Rookie mistake, I guess.
To me, it makes absolutely no sense why PSA does that. Perhaps a barrel maker can chime in.
I don’t have experience with PSA barrels or uppers but I have been debating purchasing a 9 or 10” 300bo upper from them for a build that I’m doing.
Pappabear, with the difference in groups that you experienced did you use a variety of ammo to find out if that made the difference?
Is it probable that given two barrels from the same maker one could shoot 1” groups with one variety of ammo, and the other prefer another brand of ammo?
I’m new to building/working on ar’s so please excuse me if this is a stupid question.
Mrgunsngear: I like your videos because they get right to the point and you have mostly all meat and no fat in your presentations.
I would like to see a video where you torture test that PSA AR pistol with a high round count to see how it holds up long-term.
So I proved this morning that mine works fine with an H2 buffer and milspec recoil spring, using both 5.56 and .223. In fact I'm about to order an H3 buffer to try next.
I got to look at a friend's "identical" pistol today. His bolt is not marked MPI and his bolt carrier key was so poorly staked as to be laughable. So the quality on these is definitely hit-and-miss.
His bolt is marked C158 for Carpenter steel I assume.
Sic semper tyrannis.
Thanks!
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