Palmetto State Armory Magpul AR-15 Lower Build Kit in Black

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Palmetto State Armory Magpul MOE Lower Build Kit, Black - 598

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Special Price $ 119.99

Regular Price: $ 129.99

Quick Overview

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to (CA Health and Safety Code Section 25249.6).

SKU: 598
MFR#: 598


Includes Mil-Spec MOE Stock, MOE grip, MOE Trigger Guard, Palmetto State Armory Classic Lower Parts Kit, and Mil-Spec buffer tube assembly. Everything you need to finish your stripped lower!


**Buffers may vary in finish, color, and may or may not have a PSA logo, depending on product availability.

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SKU: 598
SKU 598
Brand Palmetto State Armory
Department Build Kits & Parts Kits
Daily Deal No
Daily Deal Expires No
Unit Price No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 598

Questions and Answers

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Browse 128 questions Browse 128 questions and 366 answers
Can you switch the colors to a magpul pink?
Rw222222222 on Jan 30, 2019
BEST ANSWER: I have never seen PSA offer pink. Why not use the search engine to find out?
Will this kit build an AR 10 lower it doesn't say if it's for ar 15 or ar10 it just says miles spec I assume it for ar 15 but not sure?
Ronnie C on Apr 12, 2018
BEST ANSWER: For an AR 10 you will need a different buffer spring, a buffer that weighs 3.8 ounces, and an AR 10 specific bolt catch. Of course you will also need an AR 10 lower reciever. Usually all the other lower parts are interchangeable, but not always depending on the manufacturer. You may be better of to get an AR 10 lower build kit right from PSA and build it on a PSA AR 10 system. PSA is an awesome value and you can deal with just one company. If you are buying this to go in some other pattern AR 10 lower, say DPMS, then this would still be a good deal on a kit, you would just need to by the AR 10 specific parts listed above. I just did this very thing using a DPMS pattern polymer lower from another company and a mil spec parts kit from PSA. I love PSA. I got the buffer and spring from Primary Arms and the Bolt catch from Brownels.
What hardware do you recommend for a sling set up for this kit? First time building a AR.
Chuck C on Sep 8, 2018
BEST ANSWER: If on a budget, you can replace the end plate with the ambidextrous end plate.
Is this buffer an "H"?
Jeff E on May 27, 2018
BEST ANSWER: its a carbine, 3oz.
Can this lower build kit be shipped directly to me?
Daniel F on Jun 13, 2018
BEST ANSWER: Yes, nothing in this kit is a controlled item (at least at the federal level).
What caliber is this for?
GoatMan on Apr 19, 2018
BEST ANSWER: Build kits are platform specific, but not necessarily caliber specific. This is designed for use on the AR-15 platform, but could be paired with an upper receiver which has a caliber of 5.56, 300 AAC, .22LR, etc..
Hi there, buying this kit for a friend - and apparently know nothing, and can't get my call to go thru to PSA to ask - hoping you guys can help me: What else do i need to pick up to make this kit complete and ready to go? I have it paired with product 598, is there a magazine i need... and? (Thanking you in advance)
Veronica B on Dec 7, 2018
Palmetto State Armory Magpul MOE Lower Build Kit, Black - 598
Palmetto State Armory Magpul MOE Lower Build Kit, Black - 598
PSA 10.5
PSA 10.5" Carbine-Length 5.56 NATO 1/7" Nitride Classic Shockwave Pistol Kit, Olive Drab Green - 5165449225
BEST ANSWER: All this will need is a lower receiver, a rear sight and a magazine.
Will this kit build a complete lower receiver?
Billy S on Apr 15, 2018
BEST ANSWER: Yes, this is everything you need to turn a stripped AR-15 lower receiver in to a complete lower.
Can I use this kit to assemble an AR-9 80% lower?
Brian T on Oct 10, 2018
BEST ANSWER: Yes, after you finish milling / drilling your 80% to 100%.
Is this a rifle or pistol kit?
M. C on Jul 18, 2018
BEST ANSWER: This is a rifle kit unless you are building a short barrel rifle.
Will this work on 7.62x39 upper?
Mike M on Dec 30, 2018
BEST ANSWER: I am on my 2nd lower parts kit. 1st was on a 300BO. Love it.

On my 2nd one it’s for a 7.62x39 and the bolt won’t fully function and pick up the next round. I am thinking the buffer spring is too long or does not match the tube. The relaxed length is 10”. It all came in the kit together. Ideas?
Does this kit come with build instructions?
Danie R on Mar 7, 2019
BEST ANSWER: NO... however... YOUTUBE will hook you up and a newb can assemble one in minutes(with proper equipment)
I recommend the proper punch set and a small brass hammer for assembly. you will also need an ar wrench.. dont try to grab the castle nut with a pair of vise grips.. trust me...
How do this two items compare?
Tomas M on May 15, 2020
Palmetto State Armory Magpul MOE Lower Build Kit, Black - 598
Palmetto State Armory Magpul MOE Lower Build Kit, Black - 598
PSA AR-15 MOE+ Lower Build Kit - Black - 5165450690
PSA AR-15 MOE+ Lower Build Kit - Black - 5165450690
Do these kits come with a trigger guard?
Chuck C on Sep 8, 2018
BEST ANSWER: Yes. They come with a matching Magpul trigger guard
First time trying to build a rifle as a Father/Son project, something that he can look back on after I’m gone, is this a good starting point, what else do I need to get or should I just buy a bigger PSA kit?
Michael D on Nov 7, 2018
BEST ANSWER: This is a good kit to complete the lower reciever but this kit is not a complete rifle kit. You will also need a lower reciever and all the parts to complete the upper reciever ( upper reciever, bolt carrier group, barrel, gas tube, etc.). PSA has some larger kits that include everything but the lower reciever. Those larger kits are better if you are not customizing your rifle. In the end you will save money with the larger kit.
I want to build a semi auto .22 rifle, What a lower receiver and the complete upper you recommend? Thank you!
John W on Jan 16, 2019
BEST ANSWER: Build a 5.56mm carbine and buy the .22 LR adapter kit.
Does this have an ambi safety lever?
Colin T on May 1, 2018
BEST ANSWER: This kit includes a classic lower parts kit which is not ambidextrous. You can find an ambidextrous safety selector such as the ARMASPEC 90 DEGREE FULL THROW AMBIDEXTROUS SAFETY SELECTOR in the AR 15 lower parts section of this website.
Will this work for an AR 9? Striped lower is PSA’s forged piece.
Stoffer on Jun 18, 2018
BEST ANSWER: You need a different buffer and spring. 7.5 - 10 oz with a .308 carbine spring or 9mm spring. Otherwise yes.
Anyone know the weight on this build kit?
Ty C on Dec 22, 2018
Is it a single position buffer tube?
john a on May 11, 2018
BEST ANSWER: It should be a 6 position that’s how mine are and I’ve gotten a few of those kits they are pretty nice
Are any tools required to put all this together on a stripped lower?
Beau S on Apr 18, 2019
BEST ANSWER: Yes. There is a great YouTube video by Larry Potter of Midway USA that is VERY helpful to the beginner. Some of the taps he uses are not likely to be need.
Can this be used for .308 build?
Shawn on Feb 12, 2019
BEST ANSWER: No, it doesn't have the correct mag catch, buffer, and spring for a .308 build.
do you need a different buffer spring between rifle gas systems and carbine gas systems ?
Kyle K on Jun 7, 2018
BEST ANSWER: The spring should run fine with both the buffer you might need to change out but not likely though. I've used the same spring on my ar rifle and my ar pistol. No issues with the spring
Is this good for a pistol build ?
Jeff S on Jan 18, 2019
BEST ANSWER: Order the SBA3 lower build kit instead. All the same parts but includes the pistol brace instead of the buttstock.
Can I use this buffer tube and spring with a 7.5 pistol upper?
Jason N on Jan 21, 2019
BEST ANSWER: Yes you can as long as it is 223 ar-556
Can I build a 450 Bushmaster with this kit and a Anderson AR-15 Lower as long as I get a 450 upper?
William M on Aug 31, 2019
BEST ANSWER: Yes it will work although an A2 stocks a better option because of the recoil.
will this kit work for .458 socom?
matt c on Dec 21, 2018
BEST ANSWER: Yes it will work out fine you might want to get a heavier buffer for the long run
What size is the trigger guard set screw?
Burtrum on Aug 12, 2018
BEST ANSWER: Yep 1/16 is what I used
Can this be used for a 9mm build?
Gemini on Nov 4, 2019
BEST ANSWER: Yes. Either with a Magwell adaptor or with a dedicated lower.
Bolt carrier group included?
J E on Jan 22, 2019
BEST ANSWER: This is only a Lower parts kit and the bolt carrier is part of the upper so the answer you are looking for is No


4.8 / 5.0
994 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
First build
Very first build under my belt, I had so much fun. I can't wait to purchase my next project.
May 27, 2020
2 months ago
Great mil-spec package
Used this kit to finish a PSA lower. This was my first build. Just make sure to put the springs on correctly. That was my mistake. Drove me crazy trying to figure out what was wrong. Finished the build with a complete PSA upper. The rifle shoots great.
May 26, 2020
2 months ago
Awesome Build Kit as Always
Great build kit, works great as usual.
May 26, 2020
2 months ago
This lower parts kit was exactly what I was looking for. Fits perfectly
May 25, 2020
2 months ago
Worth it.
I like it, everything present and seems to be good quality. The price is also good.
May 23, 2020
1 month ago
PSA Magpul MOE lower Build Kit
Everything you need at a very reasonable price
May 23, 2020
1 month ago
Good parts kit
Basic mil-spec quality. Everything you need to put a lower together. Price is right.
May 21, 2020
2 months ago
Great kits, used several with zero issues.
May 21, 2020
1 year ago
the good stuff
Am very pleased with the kit I bought from Palmetto State Armory, Will make another purchase soon. Thank you!!
May 20, 2020
2 months ago
Great product!!! Will buy again
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Added May 19, 2020
May 19, 2020
1 month ago

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