Palmetto State Armory $329 shipped AR complete upper receiver

[gregintenn]

33 minutes ago, Garufa said:

It’s a good thing that AR’s come with adjustable sights.  

That would be great if there were only one...or three involved.

[mikegideon]

3 hours ago, gregintenn said:

All kinds of powder may not shoot to the sights I’ve set on a large pile of ARs. A max charge of IMR 4320 does.

Varget and Reloader 15 are gonna be real close, maybe identical on the chrony. I just loaded the three powders into quickload and they were virtually the same peak pressure and muzzle velocity. Might be worth a try

[Capbyrd]

I've inspected a handful of PSA assembled uppers lately and most of them have had some type of issue.   Most common has been headspace too short for 5.56 chambers.  But I've also had some that the barrel is not dimpled for the gas block and the gas block alignment is way off.  Im not saying that they are all bad, just inspect your PSA stuff, especially if it comes from their budget lines.  

[mikegideon]

18 minutes ago, Capbyrd said:

I've inspected a handful of PSA assembled uppers lately and most of them have had some type of issue.   Most common has been headspace too short for 5.56 chambers.  But I've also had some that the barrel is not dimpled for the gas block and the gas block alignment is way off.  Im not saying that they are all bad, just inspect your PSA stuff, especially if it comes from their budget lines.  

Went for years without having to check headspace in AR's. These days, I check them. I built a gun for a friend with a Stoner barrel. The headspace was so short on it that it wouldn't go into battery without slamming the bolt carrier home. The gun was a 2 1/2 hour drive from me. Had to replace the barrel.

So now, anything I build gets the gauges.