PSA 8.5" lightweight blackout railed pistol kit for ar-15

More Views

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

In stock

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: 5165450712
UPC: 5165450712
MFR#: 5165450712

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

Add To:

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 MOE+ 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: 5165450712
SKU 5165450712
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: 5165450712

Questions and Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 9 questions Browse 9 questions and 8 answers
What is the total length with the stock in? and out? Thanks
George H on Jan 31, 2019
BEST ANSWER: With the birdcage still on mine is a hair under 24.5 with brace closed and 27 extended. The upper is 17.25 alone and lower is 14.5 closed.
Will this function with subsonic Ammo?
Taylor on Feb 5, 2019
Why 1:7 twist, aren’t all the others 1:8?
Eddie on Feb 9, 2019
BEST ANSWER: Eddie, Some people say that the 1/7 twist rate is better for stabilizing heavier 300 blkout rounds (210-230gr). Some reviewer report that slower velocity (1100fps) heavy 300 blkout rounds are not stabilized by the 1/8 twist rate and will begin to tumble in flight. I have not fired it myself, just repeating the YouTube gods.
hello i can use any stripped lower for AR15 to complete this kit ?
priyanshu k on Feb 13, 2019
Would This Be a good upgrade for the smith&wesson Ar15 Sport?
Gary w on Jan 31, 2019
BEST ANSWER: Depends...... this is technically a Pistol upper, it needs to go on a Pistol lower, if you put it on a rifle lower theb its considered a SBR and thats illegal unless you have a tax stamp and paperwork for that.
will this shoot supersonic rounds without issue?
Tyler T on Feb 15, 2019
BEST ANSWER: Yes any supersonic factory and/or handloads it functions just fine
Does this kit come with instructions on how to assemble the lower receiver parts to a lower receiver?
Shawn G on Feb 10, 2019
BEST ANSWER: No, but you can easily look up a video on youtube on how to assemble. It's very easy and you only need common tools.
I am wanting to install the Pantheon Arms/Dolos barrel takedown system on a 300BLK pistol, will it work with your handguard?
Chad S on Feb 8, 2019
BEST ANSWER: The dolos system requires a threaded hand guard. Yankee Hill rails have the same thread. I built exactly what you are thinking of and it is great.
Will an H3 buffer work with both Super and sub sonic ammo?
Patrick S on Mar 25, 2019


4.5 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Accurate, reliable and fun!
I love this pistol kit! It just looks and feels so cool, something James Bond would use. Only thing I changed was h3 buffer, BCM extractor spring and charge handle, BAD lever, red Dot and started dumping subsonics like a champ! Might go suppressed some day who knows.
User submitted image
Added Mar 8, 2019
March 8, 2019
2 months ago
My first build.
Nice kit but the handguard isnt on straight....gonna be rough on iron sights.
User submitted image
Added Feb 22, 2019
February 22, 2019
2 months ago
You can’t find a quality kit for less
I haven’t shot this yet, so this is just my initial impression. First, this kit is a really good deal for $329. I have dealer accounts at several online retailers and even with my discounts I could not assemble a parts kit like this for the price PSA is selling this for. I was initially only going to buy an upper and had already ordered a SBA3 brace, a K2 grip and everything else I would need. When these went on sale I changed my mind since I will use everything eventually. Paying the extra $60-80 premium for the entire kit vs just an Upper was a no brainer.

It is evident why the upper is sold at a budget price when you look at it. The finish inside the upper is a little thin compared to a premium upper and the rail is obviously a budget part. That being said everything is well finished. The rail is solidly attached and has integral anti-rotation tabs. Since most premium rails sell for over half the price of the kit, this is acceptable.

The only reason I’m taking off a star was that it was immediately apparent that the gas block is significantly canted. The gas tube is well centered though and doesn’t bind in the gas key. Overall I’m not sure if it’s just the gas block or the entire barrel assembly that’s canted. The Upper was obviously test fired, so I’m guessing it functions. If it does I’ll probably leave it alone. So, my only complaint is PSA should have a little more care during assembly.

Overall these are a great deal. If you are on the fence about trying .300 BO, you can’t do it cheaper. I’m glad PSA is offering 1:7 barrels and I’d like to see this across the board in their .300 offerings.
February 11, 2019
2 months ago
Good quality build kit. But...
This is an awesome build kit. However, I did have to dock a star for 2 reasons: there was a very aggressive machining edge on the bolt catch big enough to where it would not seat in its spot in the lower receiver. Had to take it to a bench grinder to grind down the excess metal (Pictures to come). Also I ordered the kit on a Friday and it didn’t even ship out until the following Wednesday. Aside from these small issues, I put about 50 rounds through my pistol so far (utilizing a “no step on snek” lower receiver from PSA) and not a single issue functioning so far. Used armscor 147 gr ammo along with some of my 125 gr hand loads. Locks back on empty mag and has a very stead 4 o’clock ejection pattern. Fit and finish are also very good. Overall, definitely worth buying.
February 9, 2019
2 months ago
Great Kit!
I had an extra lower and saw this kit and decided to pick it up. It's really nice! I was surprised with how well the enhanced trigger feels. You can tell a difference with it being polished. I usually change them out, but I might try this one for a while. Overall this is a great bang for your buck. I wanted to add another 300 BLK to the collection and this fit the bill. Can't wait to take it out!
User submitted image
Added Feb 8, 2019
February 8, 2019
Bang for the buck kit!!
Great kit for the money! Assembled my lower, slapped the upper on and away I went! Took my wife up the mountain to try it out after I gave the pistol a generous amount of lube being brand new. Functioned flawlessly! Not a hickup in the gitup lol! Put an instant smile on my wife's face and she was no longer mad lol! I live in oregon and it took almost exactly a week to receive in the mail! Probably one of the funnest ars I have! Not a lot of flash or excessive noise being 300 blackout. Can't go wrong with PSA. Their supplied trigger does seem better than a stock mil spec. Overall very satisfied! 300 rds so far %100 reliable!
User submitted image
User submitted image
February 5, 2019

Customers Who Viewed This Item Also Viewed