12-25-2019, 02:51 PM
Figured I would document a little bit since this thread has had a little bit of attention & stirred some curiosity. Still waiting on my rail/barrel nut for the AA barrel but figured I'd go ahead & disassemble my PSA upper & check my RRA to see how they measured up. I was somewhat surprised.
First 3 pics are the progression of the PSA upper (12" complete upper buy). It was DEFINITELY off by enough to lead me to think the overall accuracy should be improved (haven't shot to verify). It was a good ways from being true & took a bit more time to lap than I had anticipated. Was also surprised to see no signs of any lubrication or thread locker/anti-seize on the barrel nut.
[ATTACH=CONFIG]15159[/ATTACH][ATTACH=CONFIG]15160[/ATTACH][ATTACH=CONFIG]15161[/ATTACH]
Once I finished with it I started on my rock river upper; this is where I was surprised. It was MUCH further "off" than the PSA and took quite a bit of time to get it lapped enough to get a uniform surface. I'd say I spent probably twice as much time working on the RRA than I did my psa which I was NOT expecting (or maybe my expectations where just in the wrong place?).
[ATTACH=CONFIG]15162[/ATTACH][ATTACH=CONFIG]15163[/ATTACH][ATTACH=CONFIG]15164[/ATTACH]
I will say this has "convinced me" that it's worth doing this from now on. Only one I won't bother with is my AD Reaper 33, but it's been an absolute tack driver since day 1 & far more accurate than I'll ever be (but that's what a "high end" built rifle will do I suppose).
First 3 pics are the progression of the PSA upper (12" complete upper buy). It was DEFINITELY off by enough to lead me to think the overall accuracy should be improved (haven't shot to verify). It was a good ways from being true & took a bit more time to lap than I had anticipated. Was also surprised to see no signs of any lubrication or thread locker/anti-seize on the barrel nut.
[ATTACH=CONFIG]15159[/ATTACH][ATTACH=CONFIG]15160[/ATTACH][ATTACH=CONFIG]15161[/ATTACH]
Once I finished with it I started on my rock river upper; this is where I was surprised. It was MUCH further "off" than the PSA and took quite a bit of time to get it lapped enough to get a uniform surface. I'd say I spent probably twice as much time working on the RRA than I did my psa which I was NOT expecting (or maybe my expectations where just in the wrong place?).
[ATTACH=CONFIG]15162[/ATTACH][ATTACH=CONFIG]15163[/ATTACH][ATTACH=CONFIG]15164[/ATTACH]
I will say this has "convinced me" that it's worth doing this from now on. Only one I won't bother with is my AD Reaper 33, but it's been an absolute tack driver since day 1 & far more accurate than I'll ever be (but that's what a "high end" built rifle will do I suppose).