PSA 8.5" 300 blackout railed pistol kit

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PSA 8.5" .300 AAC Blackout 1:7 Nitride 7" Lightweight M-Lok MOE EPT SBA3 Pistol Kit - 5165449761

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Regular Price: $ 659.99

Special Price $ 399.99

Quick Overview

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

It is the customer's responsibility to be aware of all applicable laws and regulations regarding the purchase and ownership of uppers with a barrel length of less than 16". Federal NFA regulations are applicable to this item.

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: 5165449761
UPC: 5165449761
MFR#: 5165449761

Barrel Length: 8.5"
Barrel Profile: Heavy
Gas System: Pistol-length
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: No
Muzzle Thread: 5/8-24
Chamber: 300AAC Blackout
Twist Rate: 1:7
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low-profile
Muzzle Device: PSA A2 Flash Hider
Receiver Material: Forged 7075 T6 Aluminum
Receiver Type: M4
Handguard Type: PSA 7" Lightweight M-Lok Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes
Build Kit: MOE SBA3 EPT Pistol Kit, Black

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Barrel: 8.5" 4150V Chrome Moly vanadium steel, nitride treated and chambered in 300AAC Blackout with a 1 in 7" twist. Pistol length gas barrel is finished off with a PSA Lightweight 7" M-LOK Rail, a low profile gas block, and a PSA A2 Flash Hider.

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring a mil-spec finish, these uppers are made for us right here in the USA by a mil-spec manufacturer.

Bolt Carrier Group Bolt made of mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec.

Build Kit: A high quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features Enhanced Polished Trigger (EPT), Magpul Grip, Magpul Trigger Guard, and black oxide coated hammer and trigger springs. Also includes SB Tactical SBA3 Adjustable Pistol Brace, castle nut, latch plate, carbine buffer spring, 5 positioning mil-spec buffer tube, and standard carbine buffer. 

SKU: 5165449761
SKU 5165449761
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: 5165449761

Questions and Answers

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Browse 7 questions Browse 7 questions and 23 answers
Is the gas block adjustable?
Yetti on Oct 13, 2018
What is the overall length?
Randy H on Jan 4, 2019
BEST ANSWER: 24 inches with the brace collapsed 27.5 with it fully extended.
Is the flash hider pinned or can it be removed for supressor use?
Msievs on Dec 12, 2018
BEST ANSWER: It can be removed. I removed mine and direct threaded my supressor before i added a silcencerco ASR muzzel break.
All that’s needed is a stripped lower or is a lower parts kit also needed?
BRAD S on Oct 9, 2018
BEST ANSWER: Stripped lower only...
Any special tools needed for this?
Scott on Feb 3, 2019
BEST ANSWER: No, nothing that you wouldn’t need for any AR build. Set of punches, small brass and plastic tip hammer, a loading block for the trigger guard, a castle nut wrench for the buffer tube extension. I used some blue painters tape to cover the lower while installing the bolt catch pin. That was the only unique tool...and any masking tape would do...or you could just have better aim than I do with a brass hammer. Oh yeah, you’ll need a 1/16” hex key to attach the other side of the trigger guard. It has a hex screw, not a pin.
What paperwork is needed to purchase this from one of your stores, like a pistol purchase permit ?
Thomas T on Apr 3, 2019
BEST ANSWER: It depends on what state you’re from I am in Arizona and we don’t need any special permit to buy a pistol kit without a receiver you have to have a FFL involved if you’re going to get a receiver to go with it I had my ship directly to my houseEnter an answer to this question.
Is there anyway to do the 7.5 barrel with 7 handguard and this brace?
kyle H on May 24, 2019
BEST ANSWER: I don’t know why you couldn’t , it sounds like just a barrel replacement if you can find a 7 inch barrel.


4.8 / 5.0
18 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great product. All parts were there. No "custom fitting" required. And it shoots well. No complaints. Money well spent
May 1, 2019
2 months ago
Great .300 pistol build
I was very pleased with this pistol build the trigger pull is nice and crisp and right along with the Sig Romeo 5 that I Purchased from PSA is was amazingly accurate.
User submitted image
User submitted image
May 1, 2019
2 months ago
Blackout Bargain
My third build kit....once again another superb quality kit from PSA! The polished trigger is the icing on the cake. Smooth, clean break. All in all, you'd be hard pressed to find this kind of quality for the money elsewhere. Do yourself a solid and get one of these!
March 22, 2019
4 months ago
Great Kit, love it.
Great kit. This was my first build, and all the parts were separated for easy sorting and assembling. Only issue was the Magpul trigger guard. The small torx screw stripped when it was almost fully seated. Just be careful with that part. Other than that it's an easy build and great shooter. Thinking of buying another.
Great kit, at a good price. First time build, was really easy.
Great kit, at a good price. First time build, was really easy.
March 17, 2019
4 months ago
Great kit but came with blems
First time buying from PSA. Saw this kit and figured it would be a good budget pistol build. Psa processed and shipped to my door quick. Each part of the lower was individually wrapped which made it easier to build the lower. Came with an extra spring and detent. Didn’t need them but nice Incase you shoot one across the room. (For those building put the lower is a plastic bag when installing the front pin so it doesn’t happen). All parts fit great and there was no wiggle between the upper and my spikes tac lower.

The only reason I’m giving it 4 stars is because there were some blems on the upper and on the ejector port cover. The cover was scratched and looked used. Little disappointed since I bought it new and not a blem version.

Overall great kit.
March 6, 2019
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
March 6, 2019
Casey S
PSA Pistol Kit
I bought this kit mid January and so far have been to the range twice with it and sent 300 rounds through it. Fires smooth and I've never had any feeding issues. Only thing I had was the handguard would slide forward a little bit. I tightened it down and put some thread locker on it but it did it again last weekend. This time I really tighten those bolts down with locker so we'll see what happens. But overall very happy with it.
Streamlight Tac Pro with a Arisaka mount and Vortex Venom mirco red-dot.
User submitted image
February 18, 2019
Supersonic ammo is no problem, but subsonic does not cycle... Also, the mlok did not have enough slots on bottom to put the mlok Adapter for the AFG2 - had to get get some extra parts to make it work and it is not fully supported.
February 17, 2019
4 months ago
Amazing kit. Amazing price
Great kit ! This was my first build but not my first rifle. I ordered this on a recommendation from a buddy that has ordered from you guys before. Fast shipping. All parts were in the box.

Anderson Manufacturing lower fit perfectly with no slop. I added a few things like the pop up sights, dust cover, magazine catch and ambi charging handle. I also ordered the Holosun/magazine package from you guys and put that on also.

Put 40 rounds down range and no issues. I'll be recommending you guys to everyone I know and possibly ordering a few more kits
AM lower, pop up sights and Holosun red dot
AM lower, pop up sights and Holosun red
February 16, 2019
4 months ago
Awesome kit.
Built this to replace my 9mm carbine truck gun. It exceeded my expectations in accuracy. Completed with Law Tactical folder and Dolos takedown. Will almost fit in a shaving kit.
February 10, 2019
6 months ago
Great budget gun build.
February 10, 2019
5 months ago

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