Sig lowers are nice. Hard to find though.

I'll be that guy. Used many, will continue to do so.

I do as well.  And Cav Arms Mk 2s, & cheap polymers, & even cast epoxy.  

An in spec lower is an in spec lower. All else is vanity.

Straight up B.S.  

I've easily built or helped friends build 60 to 80 ARs, mostly using "stripped" / "bare" Palmetto State Armory & Anderson Lowers - NEVER had a single receiver "QC" issue.  Even using so called "Blems"...  

Admittedly, I'm a sample size of 1 guy building about 70 lowers in recent years, but I haven't seen a single issue (using proper parts kits) that was actually Poor "receiver" Q.C...

I'd have ZERO qualms about building yet another 70-ish lowers on Anderson or Palmetto State Armory Lowers.   Any "issues" are much more likely to come from cheapo - chineseium super low cost "parts kits".

My own personal favorite is the Aero Precision Lowers for their rear detent retention feature, along with the tension screw to minimize play between upper & lower.  

The biggest down about Anderson is some people don't like their pony.  Odd, because another maker puts a pony on their lowers and everyone goes bonkers for it!

Anyway, good luck to you O.P. - these days the pickings are slim and the prices are high.   Glad I hit the "salad bar" hard & often back in the "salad days"...

BIGGER_HAMMER

I would like to know why the finish on PSA lowers looks so grainy

Like this?

Attached File


(My LMT Defender lower).  

Thats a pisser offer!


They didn't drill the 3rd hole for your full auto FCG.

I recently purchased two billet receiver sets from Quentin Defense. They went together nicely and the quality appears top notch.  I haven’t had a chance to function test them yet though.  They currently have a few  different ones in stock. https://www.quentindefense.com/

The two I got from them last month don't.

An M16A4 clone and their stealth lower. I can post pics later after work if you'd like.

Speaking of lowers PSA has this for sale. Won't last long.

https://palmettostatearmory.com/psa-ar15-complete-classic-stealth-lower.html

Great lowers, at least the CavArms and Eagle ones I've owned, have two of the KE ones waiting at my FFL.  The only bad part is you don't have an adjustable stock.

+1, also stay away from 6065 aluminum.  Just stick with 7075.

CD

Same here with about a dozen Andersons and about 8 PSA's.  No issues with STAG either (people used to complain about the deer logo too).  We've come a long way.  My first SGW/Oly stop sign lower from the mid 80s won't take polymer mags, only USGI.  A late 80s/early 90s cast Eagle Arms wasn't that great either.  Normally work on Colt/FN daily.

CD