PSA Complete Rifle Lower Receiver A2

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PSA AR15 Complete Rifle Lower Receiver A2 - 504399

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Regular Price: $ 239.99

Special Price $ 149.99

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If you live in California, please read this notice before ordering.

WARNING: This product can expose you to the chemical lead, which is known to the State of California to cause cancer and reproductive harm. For more information go to (CA Health and Safety Code Section 25249.6).

SKU: 504399
UPC: 504399
MFR#: 504399

PSA Complete Rifle Lower Receiver A2

  • Lower Machined from 7075-T6 Aluminum Forging
  • Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2
  • PSA classic fire control group
  • Mil-spec style  A2 stock with metal latch
  • rifle length buffer and spring
  • Un-notched Hammer compatible with 9mm use
  • Caliber: Multi


Due to state laws, this item cannot ship to California.

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PSA Complete Rifle Lower Receiver A2.  Just the thing for that A4 clone.  True mil-spec style dark grey stock that darkens with application of CLP.

  • Lower Machined from 7075-T6 Aluminum Forging
  • Hardcoat Anodizing: MIL-A-8625F, Type III, Class 2
  • PSA classic fire control group
  • Mil-spec style  A2 stock with metal latch
  • rifle length buffer and spring
  • Un-notched Hammer compatible with 9mm use
  • Caliber: Multi


Due to state laws, this item cannot ship to California.

SKU: 504399
SKU 504399
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 504399

Questions and Answers

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Browse 24 questions Browse 24 questions and 81 answers
What is the "length of pull' on the lower?
donny zoom zoom on Dec 22, 2018
Im building an A2 replica as accurately as possible to the one my dad carried in Iraq, can I get it in black?
Chris27A on Aug 15, 2018
BEST ANSWER: First cleaning with and CLP spray will darken the color from gray to a lighter black. Great lower so far.
I bought the 20” barrel upper already and just bought this A2 lower. It’s at my FFL waiting for me to pick up, does it have both take down pins already installed in it ? Or just 1? Or will have have to buy 1 take down pin ? Let me know , thank you
Ryann T on Sep 4, 2018
BEST ANSWER: It is a complete lower. It has both pins (pivot & take down) installed. They are retained with springs and detent pins. Just add a complete upper.
Does think have to ship to an ffl or can it be shipped directly to me? Either way would be okay.
Keith M on Apr 23, 2018
BEST ANSWER: FFL because this is the part with the serial number on it but you can interchange any 16" or above upper on it I believe.
Will it work fir an A-2 build?
Ted T on Apr 19, 2018
BEST ANSWER: Yes, it is designed to be the lower receiver for an AR-15 A2 build.
What if the weight of this lower?
RussWilliamson on Jun 28, 2018
Does this have the storage compartment for the cleaning kit?
ShannonT on Jun 24, 2018
BEST ANSWER: Yes, it does come equipped with a storage section in the buttstock
Will it work on DPMS 5.56 upper?
JR on Dec 25, 2018
BEST ANSWER: I have this lower on a DPMS AP-4A and it’s good and tight. I did replace the buffer spring, selector, and trigger. It actually should work with any mil spec upper with an AR-15 sized upper receiver.
How do I turn this into a 9mm rifle?
Wayne K on Mar 27, 2019
BEST ANSWER: I would say save that for another build and buy a dedicated 9mm lower I think would be the best way to go because then you can choose between using colt magazines or glock mags .I suppose you could go with a magazine block but as someone else mentioned earlier your gonna have to change your buffer and spring .I personally would go with the dedicated lower such as and then build or buy an upper that fits your need ...hope this helps
Will this work will the 20 inch upper?
Nicholas M on Mar 15, 2019
BEST ANSWER: Mine is on a PSA chf ,20 inch upper. It works . It has to be matched AR 15 to AR 15 upper.Ar 10 lowers are much bigger.Enter
I want to build an A2 style rifle for hunting. Will the buffer spring in this work with 300 black?
Old Greg on Dec 9, 2018
BEST ANSWER: Possibly, it depends on how your upper is gassed. This is a rifle weight buffer so if you are planning on shooting supersonic ammunition it will probably work, but if you are shooting subsonic ammunition it might not cycle the action.
Will any standerd upperwork with this and does it come with buffer buffer spring does it take a m16 buffer or m4 style?
carl m on Dec 23, 2018
BEST ANSWER: It will work with any AR15 style upper but is generally used with rifle length gas system usually 18 or 20 inch barrel and it comes with rifle system buffer and spring.
I'm thanking of doing an 458 socom build would this work ? Thanks
Randall C on Aug 21, 2018

Its my understanding that any standard ar-15 lower should work with a 458 socom upper. However my PSA lower has really tight take down pins, not a huge deal to me as I like things tight.
Have a Colt A2 upper. It has larger pivot and take down pins than my DPMS Oricle does. What size pins does this have ? Will it be compatable with the larger Colt holes on my upper ?
Craaig S on Jan 8, 2019
BEST ANSWER: From factory they wind be, but you can purchase an adapter to fit them. They're 7 bucks on JSE surplus.
Would this work for a 6.5 Grendel build with Anderson upper and be tight? Buffer and spring heavy enough?
James T on Jul 21, 2018
BEST ANSWER: Yes it will work for a 6.5 Grendel upper. How tight the fit between the upper and lower is will depend on the tolerances of the two receivers. As long as the 6.5 Grendel isn't over or under gassed this buffer/spring combo will be just fine. This lower uses a rifle length buffer so there isn't a lot of options out there for a heavier weight buffer.
How many pounds is the trigger break, for the PSA AR15 (SKU 504399) trigger design ?
Roger B on Dec 5, 2018
BEST ANSWER: It's a standard AR15 single stage trigger, mine breaks cleanly at 5.2lbs
can you put the m16a1 stock on this?
dig d on Apr 24, 2019
Can you put m16a1 stock on this one?
dig d on Apr 24, 2019
Can you replace the a2 stock with a1 stock? Does buffer tube is too long for a1 stock?
dig d on Apr 23, 2019
Can I replace the stock with an adjustable stock ?
Schultz on Mar 28, 2019
What kind of trigger pull , would I be looking at stock as it comes?
Twigzz88 on Feb 12, 2019
Does this come assembled or would I Have to assemble it either way doesn’t matter i me I was just wondering if it was RTR out of the box or not?
Daniel G on Dec 15, 2018
Compatible with
BCA AR-15 Complete Upper Assembly, 18" 4150 Parkerized Heavy Barrel, .450 Bushmaster, Mid Length Gas System, 1:24 Twist w/ 15" MLOK?
John K on Dec 9, 2018


4.8 / 5.0
66 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
ONE NICE LOWER for those who like a rifle stock
I have purchased a few of these lowers for precision barreled uppers and they all worked fine with the .300 blackout , the .224 Valkyrie, 6.5 Grendel .and 5.56 uppers all with 24" barrels. If you buy the A2 style upper with 20" barrel you will have one nice across the course rifles for CMP and NRA Service rifle competitions. I recommend you buy 7 magazines and 100 rounds of ammo and a good scope and 1" low scope rings. I strongly recommend the Hi-Lux Across the Course XTC14X34 Competition Rifle this and you will have one fine competition rifle like mine.
May 22, 2019
Excellent value and service
The complete lower arrived quickly as the dealer I used was on file with PSA. Great quality on all components and the PSA fire control group is smoother than I expected with a nice break. My older 223 upper fit snug. Don't overlook this because the price is lower than the competition. Great quality and value!
May 6, 2019
I like this
I think this is very well made
April 18, 2019
Recoil Reducer
Love the look of this! Classic and functional. The combination of this stock with the muzzle break I have nearly eliminated all recoil on my AR. I love it. Sound is interesting shooting it however. You can really hear the buffer sliding and sounds a lot different than what I was used to. Overall, great buy!
March 29, 2019
3 months ago
Fixed vs. Adjustable length stocks, a personal choice.
This is the way to go for those of us that don’t readily like adjustable stocks, and prefer fixed length. It really adds to the better balance for the longer barrel length AR’s.
March 10, 2019
3 months ago
Exactly what i was wanting.
March 9, 2019
3 months ago
very nice for the price
March 3, 2019
3 months ago
Excellent quality with an excellent price point!
As per usual the build quality exceeds the price point with all of the controls functionality as smooth as glass.
March 2, 2019
3 months ago
Great Price
Excellent quality but really benefited from a drop in trigger system.
February 26, 2019
1 year ago
Great Lower.
This is a great lower. I don't have any complaints about it so far. Good quality & price. I'll be buying another soon.
February 25, 2019
4 months ago

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