PSA 8.5" 300AAC Blackout 1/7 Stainless Steel 2A Armament 7" M-Lok Upper - With BCG & CH - 516447611

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PSA 8.5" 300AAC Blackout 1/7 Stainless Steel 2A Armament 7" M-Lok Upper - With BCG & CH - 516447611


Quick Overview

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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: 516447611
UPC: 516447611
MFR#: 516447611

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
Receiver Type: M4
Handguard Type: 2A Armament 7" M-Lok Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full Auto
Charging Handle Included: Yes
Overall Length: 17"

Add To:

Barrel:  416R Stainless Steel, Chambered in 300 AAC Blackout, with a 1:7 twist, M4 barrel extension, and a pistol gas system this barrel features a stainless steel finish. It is finished off with a 2A Armament 7" 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.

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 parkerized outside, and chrome lined inside.

SKU: 516447611
SKU 516447611
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 516447611

Questions and Answers

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Browse 6 questions Browse 6 questions and 8 answers
I have been waiting a few months for this to come in stock, is there an ETA?
Robert on May 6, 2018
Does it have a QD sling attachment point on the hand guard?
David C on Jun 23, 2018
BEST ANSWER: Yes there area areas to place the quick release for the sling
Is this an A2 style barrel profile or a Heavy barrel profile? It's coming up under a filter for Heavy barrel, but says A2 profile.
M A on Jun 22, 2018
Will this upper fit on a standard M4 lower? (New Frontier lower)
Surfer Ron on Jun 14, 2018
BEST ANSWER: Yea it will, as long as the lower uses standard diameter take down pins unlike the colt lowers
if i install this upper on a standard lower with a rifle stock will it make it an SBR?
jrstigger on Jun 19, 2018
BEST ANSWER: YES, it will make it an SBR. Do not put it on a complete rifle lower until you have your NFA paperwork back.


4.2 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Looks good
The 300 Blackout upper looks good. I would have given it 4 or 5 stars, but I have not been able to fire it. The complete pistol lower you sent my FFL had a out of spec distance between the pin holes. So I was not able to mount the upper on the lower. Right now my upper is a nice looking paper weight. Quality control problem ? Sure was with the lower. Wondering if the upper has a problem. Only time will tell.
August 14, 2018
2 months ago
absolutely love it. its fun too shoot.
i love it.  just got the m bus back up sights.
i love it. just got the m bus back up sights.
August 14, 2018
2 months ago
Would buy again if I needed another AR pistol.
- Reasonably accurate; puts all the holes in a 7-8" group @ 200yds using a red dot sight. Might actually be accurate if I put a real scope on it.

- Rifling is 5 groove. Does anyone know if this is 5R rifling . . . in a pistol barrel?

- BCG coating is a little rough. Not a functional problem & perhaps it's by design as a rough surface holds more lubricant than a smooth surface, but it'll catch some fuzz if you wipe it with a patch while cleaning. I'm sure it'll smooth out with use.

- Have had approximately one misfeed per mag so far (mid mag), but I've done zero tuning on it & am shooting super & sub loads developed in my carbine-length rifles. This shouldn't be hard to resolve if it's not a break-in issue.
July 24, 2018
1 month ago
Looks Great, not got to shoot it yet!
July 22, 2018
1 month ago
Good upper, especially for the sale price
I ordered this upper on one of Palmetto's frequent sales. When I received it, it would not mate to any of my lowers. The front pin went in just fine, but I could not get the rear pin in. I could fit a credit card through the gap in the upper and lower. I tried on 3 different lowers with no change, a different PSA upper fit on all 3 lowers with no problem.
Very fast turnaround and customer support from PSA. Got an RMA and return shipping label in a day, sent it back and received the replacement (I think they fixed it and sent the same one back). No problems attaching to any of my lowers now.
I was able to get to the range this past weekend, having some cycling issues when shooting with a suppressor. Might look into an adjustable gas block as it cycles fine unsupressed. Overall, looks good and works mostly ok. Will update once I get an adjustable gas block.
July 21, 2018
1 month ago
Great detail, the whole thing speaks quality!
July 20, 2018
1 month ago
Quality piece of hardware
Nice quality workmanship with excellent fit and finish.
July 20, 2018
1 month ago
Better than expected!!!
I put 20 rounds through it and it cycled perfectly.
July 19, 2018
1 month ago
Rough Finesh BCG
Extremely Rough Finish on BCG
I own 4 or 5 BCGs from PSA and they are all good to very nice.
This BCG is rough as a cob
July 1, 2018
1 month ago
Got mine .!!! You snooze you loose.
I just ordered mine this morning today.
My buddy has the same upper and it shoots nice, and I wanted to get in to the 300blk craze after shooting he’s, the range buy us is about 200yards and I am able to hit an 8 inch target and the target swings pretty good compared to my 16. 556 . I was looking to save money because it can get expensive and I have been comparing PA to my existing stock pile and as far as treatment or logos there pretty much the same except the price and the only argument I can make is that a civilian model AR example colt there is very little diff. The average guy is not throwing 550 rounds down range a month I do about 200.
This my third upper I ordered from PA I also got the mid-length 16 upper and I been shooting it at the 100-200 yds and I sighted it at 50yds with about 500rounds so far and I wanted to beat on this one and it hasn’t have a problem yet and I use D&H / Magpul 30rd mags , I plan to use my 60 and 100 drum this Sunday . And I am just your average guy. And also I use that upper on my colt and bushmaster lower. Thank you for reading!!!
And be safe and watch out for the unsafe!!
June 15, 2018

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