PSA Part (1)
This is Part One, of a several part Palmetto State Armory (PSA) 10.5″ pistol build. This part will focus on the PSA lower, other articles will focus on the 10.5″ upper, parts kit and the completed build. This is my first experience with PSA products, so let’s jump right into the PSA AR-15 lower.
I purchased the PSA EPT SBA3 Pistol Lower while it was on sale. The sale was for 199.00 and had free shipping. Considering the SB Tactical SBA3 adjustable brace is about 150.00 dollars if you purchase it by itself, this is a screaming deal for a complete assembled pistol lower. The PSA Lower can be found here: (
https://palmettostatearmory.com/psa-ar15-complete-moe-ept-sba3-lower-5165448150.html). The lower also came with PSA’s Enhanced Polished Trigger (EPT) which is a slight upgrade on the trigger. Of course Magpul grip and trigger guard also come on the lower and is pretty much standard with most manufacturers now.
The PSA lower came in very simple and nice packaging. A padded box and a PSA sticker. Simple, no extras and straight to the point. The small PSA box is nice if you want to store your lower for whatever reason.
Specs/Attention to Detail:
Over all the lower seems to be mil-spec in quality and materials and finish. A few things stuck out to me when I first looked over the PSA lower. I was surprised to see, in a lower priced this affordably, STAKING. The end plate is staked into the castle nut. This is a minor thing but I think it is important and a sign of quality. There are several manufacturers that sell lowers far more expensive than the PSA’s and they do not stake the castle nut in place.
The next thing I noticed was the beveled magazine well. Another nice touch that makes feeding the magazine into the lower quick, smooth and easy. The lower receiver is a low shelf receiver, so if you are someone who is lucky enough to have a drop in Registered Auto Sear (RAS), you should be good to go.
The last thing I thought was a nice touch is the Palmetto State Armory logo on the SBA3 brace itself. In the future PSA articles this will tie in nicely on other parts. A small marking that shows PSA is tying in all the small details for the purchaser. This has no functional use but makes the buyers experience enjoyable in small matching details. For someone who checks to make sure every part on a Colt rifle or other manufacturer firearm is marked or stamped properly, it is a nice touch. Clearly PSA took the time to have a conversation with SB Tactical to ensure this happened.
So let’s get down to what really matters, how does it function. Well the simple fact is 100%. I have had absolutely no issues with the PSA lower. I have run approximately 750 rounds with the lower, which is not a lot, but a proper built and spec’ed lower will probably never have issues. I did change a few things with the lower. I replaced the PSA carbine buffer with an H buffer as I run an H buffer at the minimum on all lowers I have. I also changed the MOE grip to a Magpul K-Grip as I like the angle better. The safety selector is audible, tactile & smooth when flipping from safe to fire and back.
I used several different AR-15 uppers on the PSA lower. All uppers function 100% with the PSA and I had no issues on the fit or function. The PSA upper I used can be found here: (https://palmettostatearmory.com/psa-10-5-carbine-length-5-56-nato-1-7-nitride-12-slant-m-lok-upper-with-bcg-ch-mbus-sight-set-5165449684.html).
The EPT trigger is a mil-spec trigger but has PSA’s enhanced polishing and a Nickel Teflon finish. Both the hammer and trigger is polished and coated in PSA’s Nickel Teflon finish. Can you tell a huge difference from a stock mil-spec trigger? That is for you to decide. I compared the EPT PSA trigger to several Colt mil-spec triggers. I could maybe feel a slight difference but all of the Colt’s had thousands of rounds through them. The PSA was smooth right out of the box, very little creep and the break was very nice. I have no complaints and because it was included in the price of the lower, I think it was worth it. Fast and clean follow up shots felt like a well used, broken in trigger.
At this price point, I see absolutely no reason why you should not pick up a PSA lower. Especially if you are looking for a Pistol lower with the SBA3 brace. Hell, pick up a few at this price. I am very happy with this purchase and it should serve me and you well if you choose the PSA lower. If you are in the market for a rifle lower the PSA rifle lowers are cheaper than the PSA pistol lowers. I have seen them as low as 120.00 dollars, depending on stock and grip. If you are building a pistol or rifle I would say you should give PSA a look, especially if you are on a budget.