AR 10 / LR 308 Build

[USAFVET1]

Slop doesn't affect accuracy. Wedge it if it bugs you, or stick an O-ring around the rear takedown lug, but it won't matter to accuracy. At least it doesn't in an AR15 so it shouldn't in the big brother.

Good to know! Thanks!!

[varanidguy]

Slop doesn't affect accuracy. Wedge it if it bugs you, or stick an O-ring around the rear takedown lug, but it won't matter to accuracy. At least it doesn't in an AR15 so it shouldn't in the big brother.

Yeah, my Aero Precision .308 build has a *tiny* bit of rattle to it...it doesn't bother me too much. My AR-15 is a Franklin Armory upper and lower...and it's SUPER tight. The rear takedown pin had to be drifted out with a hammer and a punch when it was new, but now that it's been shot a decent amount it comes out with fingers, but it's still tight enough to where there is zero slop/rattle.

[Russ4777]

Thanks for that info.

I have also read some enhanced triggers and grips won't fit with PSA lower. Anyone have experience with these parts on PA 10 lower or DPMS style lower?

I just assembled a PSA P-TAC lower and used a Hogue grip. No problems. It fit as it should on this .308 lower. I did the setscrew mod on the takedown spring so that the grip would not be the retainer for that spring.

[SloChicken]

Add...
PA-10 is PSAs pattern some components are not interchangeable.

This isn't true. I have built a couple of PSAs upper/lowers.
You need to use DPMS low (post 2009) upper compatible parts.

The problem with the PSA kits was they were using AR15 LPKs for the build kits and they have takedown and pivot pins that are too short for a LR308 build and the bolt stop/release lever is also AR15 which has been known to be troublesome for some builds but will work with most.

Big stuff to know is to get a DPMS low format (post 2009) hand guard and that some Geissele triggers will not work as the hammer stands too tall and impacts the BCG as the rifle cycles.

Good luck. Be patient with the lack of a mil-spec. In all likelihood you will waste a little money getting it straightened out. I did on the way, that is for sure.

[Munny$hot]

That accu-wedge thing?

A thin o-ring around the front take down lug works better and is cheaper than the accu wedge

[varanidguy]

A thin o-ring around the front take down lug works better and is cheaper than the accu wedge

I'll keep that in mind for future reference, either if the wobble on my .308 gets worse or I get another rifle with bad enough wobble to it. Thanks for the tip!