PSA AR15 Complete Rifle Lower Receiver A2 - 504399

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PSA AR15 Complete Rifle Lower Receiver A2 - 504399

In stock

Regular Price: $ 239.99

Special Price $ 159.99

Quick Overview

free shipping Free Shipping applies to this item only and not the entire order.

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

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 N/A
Free Shipping Qty N/A
SKU: 504399

Questions and Answers

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Browse 11 questions Browse 11 questions and 53 answers
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.
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.
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.
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: I have the same lower on a 20 inch upper and this lower is ready to attach your upper to and go. You shouldn't need anything additional. I love mine and I'm sure you will too!
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
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.
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.
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
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.
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
What if the weight of this lower?
RussWilliamson on Jun 28, 2018


4.7 / 5.0
50 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great Lower
This is a great lower. I noticed that one post mentioned a loose stock. Well, if you don't know how to tighten a loose AR stock, in my opinion you shouldn't be handling a weapon of this type. Another was rusty take down pins after a while. This is normal if you don't clean your weapon. I have a C*LT brand twin to this lower, and even it gets rusty take down pins if you don't properly care for it.

So all in all, this is a great lower. PSA has been a pleasure to deal with and I will be ordering again in the future.
December 11, 2018
Just what I was looking for
Exactly what I was looking for at a great price.
Replica M16 build
Replica M16 build
December 9, 2018
1 month ago
psa upper and lower
I have built 7 lowers 5 of them from psa I never had an issue with the lowers all the uppers I got were top notch all complete except 1 it had a small nick on the front pivot pin lug not a big deal it cant be seen when the upper and lower are together this was not ordered as a blem upper still bad ass and have never had a fail going to order another upper and build the lower
November 28, 2018
Tribute to those who carried this in harm's way.
Picked up my A2 lower and very pleased. Took it home and attached it to my A2 upper with all the parts and it works. Did take a little effort with the front pin but other folks have mentioned that in other reviews. Did a function test and every thing works with no issue's. Now got to oil it and get some shooting in.
Complete A2 lower.
The complete black rifle. Please disregard miniature collection in the background.
November 19, 2018
Not satisfied
Poor quality bought it to finish my rifle for deer season and the stock is is extremely loose from the lower receiver I will start spending my money elsewhere
November 18, 2018
1 month ago
Response from Palmetto State Armory
We do apologize for that. Since all of our parts and firearms are covered by our Unlimited Lifetime Warranty, if you have any issues arise from the craftsmanship of the product, we can either have select parts sent to you for you to replace, or we can have the item brought in, at no cost to you, so we can repair or replace the defective product. Please contact Customer Service so we may resolve this issue.
November 19, 2018
Casey S
Future Family Heirlooms.
Used it in a build I made for my future father in law as a clone of his service rifle. Gave it to him as a gift in exchange for giving me his blessing. He loved it. I hope it will be in our family for many years to come.
October 31, 2018
2 months ago
Perfect... Very good customer service. Fast shipping.
October 21, 2018
2 months ago
Great quality as usual. I wish the upper handle had actually been attached
Nice lower for my A2 project
September 29, 2018
3 months ago
Great deals as always here at PSA. Will be buying again
September 23, 2018
4 months ago
Great product at a great price.
The lower is everything you need at a price you want. No spring rattle.
September 21, 2018
3 months ago

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