PSA 8.5" Pistol-Length 300AAC Blackout 1/7 Stainless Steel 7" Lightweight M-Lok Upper w/o BCG or CH - 516446449

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PSA 8.5" Pistol-Length 300AAC Blackout 1/7 Stainless Steel 7" Lightweight M-Lok Upper w/o BCG or CH - 516446449


Quick Overview

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.

SKU: 516446449
UPC: 516446449
MFR#: 516446449

Barrel Length: 8.5"
Gas System: Pistol-length
Barrel Profile: A2 Style
Barrel Steel: 416R Stainless Steel
Barrel Finish: Stainless Steel 
Chrome Lining: None
Muzzle Thread: 5/8-24
Chamber: 300 AAC Blackout
Twist Rate: 1 in 7"
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: No
Bolt Steel: N/A
Bolt Carrier Profile: N/A
Charging Handle Included: No
Overall Length: 17"
Weight as Configured: 3 lbs

Add To:

Barrel:  416R Stainless Steel, Chambered in 300 AAC Blackout, with a 1:7 twist rate, M4 barrel extension, and a pistol gas system this barrel features a stainless steel finish. It is finished off with a PSA 7"  Lightweight M-Lok Rail, .750" diameter 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. These uppers are made for us right here in the USA by a mil-spec manufacturer.

Upper Does Not Include BCG or Charging Handle


SKU: 516446449
SKU 516446449
Brand Palmetto State Armory
Daily Deal N/A
Daily Deal Expires N/A
Youtube Video N/A
Free Shipping? N/A
SKU: 516446449

Questions and Answers

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When is this gonna be back in stock?
David L on Aug 22, 2018


5.0 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Makes an awesome little AR pistol
This upper is accurate as heck. Shoots subs great and looks cool.
User submitted image
Added Jun 24, 2018
June 24, 2018
Great quality
When I first got This upper form PSA I was impressed with the quality came on time very happy with this purchase, Definitely recommend it
June 23, 2018
3 months ago
If it's in stock, (good luck) buy it now!
Fantastic little upper! The 1/7 twist seems to be the way to go if you want to run subsonic. Have about 200 rds through it now, and havent experienced any of the dreaded key-holing that was reported on (below 9") barrels that were machined with 1/8. You can ring a 12" gong all day at 200 yds with this thing, and that's just factory ammo. Very impressed with quality. The only issue I had was with the forend and not being able to attach my magpul sling to the included quick release pot. It wouldn't fully depress. I called them and they responded quickly and professionally. They asked if I wanted to send it back or try another magpul connector, which they mailed to me. I found that the coating was just a little thick inside the pot. A little cleaning and scraping with a pick, and it fits perfectly. GREAT product!
User submitted image
Added Jun 18, 2018
June 18, 2018
4 months ago
Better than I had hoped for!
I got this upper today (Wed). Ordered on Sunday. Fast shipping and well package.
Now the good news, I LOVE it! I'm getting 1"-1.2" five shot groups at 100 yds. It's a bit louder than I expected but my tax stamp will only take 6 months ( my 5.56 mm won't work for this) I had been thinking about a 10 1/2" barrel, and like this one more. This upper makes up into a light and trim side kick of a fun gun.
If you live in a free state and like more pop to the target, get this one.
June 6, 2018
Perfect upper for the 300BO pistol build!
What can you say when your six year old grandson bags his first Whitetail Deer with this upper (suppressed) on a PSA AR-15 Complete MOE EPT Pistol Lower w/ SBPDW Brace?
It don't get no better than that!
April 28, 2018
8 months ago
Excellent upper for the price.
September 30, 2017

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