8.5" shockwave AR 15 300 blackout pistol kit

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PSA 8.5" Pistol-length 300AAC Blackout 1/8 Phosphate 7" Lightweight M-Lok Classic Shockwave Pistol Kit - 5165449142

In stock

Regular Price: $ 549.99

Special Price $ 329.99

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 www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).

SKU: 5165449142
UPC: 5165449142
MFR#: 5165449142
  • Barrel Length: 8.5"
  • Barrel Profile: Heavy
  • Gas System: Pistol-length
  • Barrel Steel: 4150V Chrome Moly Vanadium
  • Barrel Finish: Phosphate
  • Chrome Lining: No
  • Muzzle Thread: 5/8-24
  • Chamber: 300AAC Blackout
  • Twist Rate: 1:8
  • Barrel Extension: M4
  • Diameter at Gas Block: .750
  • Gas Block Type: Low-profile
  • Muzzle Device: A2 Style 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: PSA Classic Shockwave Pistol Kit, Black

Add To:

Barrel: 8.5" 4150V Chrome Moly vanadium steel, phosphate treated for durability and chambered in 300AAC Blackout with a 1 in 8" twist. Pistol-length gas barrel is finished off with a PSA 7" Lightweight M-lok Rail, a low profile gas block and an 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: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is phosphate coated. 

Build Kit: A high quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Pistol kit includes a Shockwave Blade pistol stabilizer, Shockwave tube, PSA classic A2 grip, USGI trigger guard, carbine buffer spring, and standard carbine buffer.

SKU: 5165449142
SKU 5165449142
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: 5165449142

Questions and Answers

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Browse 17 questions Browse 17 questions and 18 answers
Do you ever get tired of silly questions that could be answered by reading the description?
Smart guy on Sep 20, 2018
This does come with a complete lower parts kit correct? All it needs is a striped lower?
Chris B on Aug 16, 2018
BEST ANSWER: That is correct.
Will this set up work with subsonic ammunition?
Tater Salad on Aug 19, 2018
BEST ANSWER: Technically yes. It will fire subsonic ammo. The 1 in 7 stabilizes subsonic 200gr plus projectiles better but this will work if you aren't worried about moa accuracy at any sort of distance.
Will any stripped AR-15 lower, like the PSA AR-15 1728 lower, work with this kit?
Wayne W on Aug 17, 2018
BEST ANSWER: Any AR lower will work. Lowers are NOT designated pistol or rifle. They just say multi caliber.
If you live in NYS and have your pistol permit can you have this shipped to your house?
Dick12345 on Aug 17, 2018
Can I change the lower pistol kit with a lower rifle and be legal?
Walter H on Sep 30, 2018
BEST ANSWER: No nfa rules apply and tax stamp is needed for shortbarreled rifle
Does this include a bolt?
Chris W on Aug 18, 2018
BEST ANSWER: Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Can you attach this kit to a standard AR-15 Lower unit?
TheWilk on Mar 19, 2019
BEST ANSWER: Unknown, I purchased a PSA lower. For all intents and purposes I would assume it would.
Can you change the handguard on this upper if you want to?
Patti on Oct 8, 2018
BEST ANSWER: Yes, you can change out the handguard with any free-float handguard designed for the AR platform. This barrel configuration will not accept standard M4-style handguards.
Does this come with the complete upper?
Summer D on Oct 4, 2018
BEST ANSWER: Yes, everything you need except for the lower receiver is included.
I'm wanting to buy an upper in 300 AAC Blackout.
My question is, which is better for all around use, subsonic and supersonic rounds, the pistol upper or rifle upper??? Thanks
Frank S on Sep 30, 2018
BEST ANSWER: If you are using a suppressor subsonic, if not you won't see enough of a difference for it to matter
What is the overall length when completed?
Eli M on Apr 5, 2019
Can this kit be shipped to North Carolina without a FFL ?
Ronnie W on Nov 14, 2018
When will this item be back in stock?
Herbert W on Sep 26, 2018
Normally, if a unit like this is out of stock, how long until you have more?
Misfit on Aug 29, 2018
Can this be shipped to my house in Florida?
Erik S on Aug 21, 2018


4.9 / 5.0
35 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great value at any price
Got this on sale and put it on an Aero Precision lower. Fit perfectly. All parts went in like butter and function smoothly. The machining is top notch, all parts nice and clean. The completed pistol feels substantial and good in the hand. The furniture is Magpul and really nice. FOR ANY PRICE, PSA deserves a second look from anyone wanting quality parts. Pay for a fancy name and for bragging rights. Or pay for what you want: a good looking, well-made, reliable firearm. PSA has a fanboy. They deserve it.
April 2, 2019
Great looking upper
Shipping was fast and I was glad it had an extra set of springs and detent pins. After completing the build, it shot good and looks amazing!
User submitted image
Added Feb 28, 2019
February 28, 2019
3 months ago
1st Blackout on the wall.
The 300 Blackout pistol kit, in the words of Tony the tiger
"Its gerreeaat!" There are things that really surprised me about this build. Even thought its such a large projectile and short barrel there is less recoil than a normal rifle length 556, seems even less recoil than my 9mm sig. Target acquisition is almost instant after each pull of the trigger. The only draw back is the price of ammo and accuracy beyond 75+ yards. I will eventually try out a rifle length barrel and gas system for the blackout but as far as this 300 build kit goes, if you don't already have one and have the money for a new addition to you AR family order it today! If you do have one well then......buy another you know its worth it!
February 23, 2019
3 months ago
Highly recommend
The upper looks awesome, hand guard is finished nicely, and most importantly it goes bang every time. Highly recommend.
The ONLY negative is slow processing and shipping times.
February 15, 2019
4 months ago
It was okay
Considering I’ve purchased several of your items this is the first problem I’ve ever come across. When assembling the lower, the safety selector switch it had massive burrs in it hindering it from going from safe to fire. It would continue to get stuck. I wasn’t about to hammer out the roll pins for a return so I ended up buying another LPK for other projects and to replace what I needed. What a hassle.
January 11, 2019
5 months ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
January 11, 2019
Casey S
Great package, awesome price!
Awesome home defense weapon, I’ve put over 300 hundred rounds through it without a glitch. I recommend this package for anyone looking for a reliable self defense weapon at a great price!
Love this package, I built a great home defense weapon at a very affordable price.
Love this package, I built a great home defense weapon at a very affordable price.
January 8, 2019
5 months ago
Great kit gor a great price
Great kit, exactly what i wanted to build only complaint is that the first range session i used it on the rail came loose, havent had it out sense so will keep a lookout on that to see if it continues and only other minor thing and this is all me because i wanted the 8.5" with the 7" rail but when i put my bcm hand stop on it the gas block was in the way
User submitted image
Added Jan 8, 2019
January 8, 2019
5 months ago
Very easy build.
I can’t believe how easy it was to build.
My 300 blackout pistol. I colored the magazine pink so I don’t load it into a 5.56.
I haven’t shot it yet but I can’t wait to. I’ll be sighting it in in a couple of weeks.
December 31, 2018
5 months ago
Terrific Workmanship
When I opened the package the quality of the workmanship was excellent. When assembling the upper everything for the way you expect. Excellent quality
December 17, 2018
8 months ago
Can’t beat it for the price. Shoots and runs awesome.
Little pistol shoots under 1” with Hornady factory subsonic 190gr. Very happy with build kit.
Little pistol shoots under 1” with Hornady factory subsonic 190gr. Very happy with build kit.
December 3, 2018
6 months ago

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