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PSA 16" Pistol-Length 300AAC Blackout 1/8 Nitride 13.5" Lightweight M-Lok Upper - No BCG or CH - 5165448216


Quick Overview

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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: 5165448216
UPC: 5165448216
MFR#: 5165448216

Barrel Length: 16"
Gas System: Pistol Length
Barrel Profile: Heavy 
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Nitride 
Chrome Lining: None
Muzzle Thread: 5/8-24
Chamber: 300 AAC Blackout
Twist Rate: 1 in 8"
Barrel Extension: M4
Diameter at Gas Block: .750"
Gas Block Type: Low-profile
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Hand guard Type: PSA 13.5" Lightweight M-Lok Rail
Bolt Carrier Group Included: No
Bolt Steel: N/A
Bolt Carrier Profile: N/A 
Charging Handle included: No
Overall Length: 24.5"
Weight as configured: 3.7 lbs

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Barrel: This Chrome Moly vanadium 4150V barrel is chambered in .300 AAC Blackout with a 1:8" twist, M4 barrel extension, and a pistol-length gas system. Barrel is nitride treated for accuracy and durability, and is finished off with a .750" diameter gas block, PSA 13.5" Lightweight M-Lok free float rail, and an A2 Flash Hider.

Upper: The forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. These uppers are made for us right here in the USA by a mil-spec manufacturer.

The 300 AAC Blackout cartridge is based on a 5.56 casing, and as such uses a standard AR15 BCG (not included).

SKU: 5165448216
SKU 5165448216
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: 5165448216

Questions and Answers

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Browse 14 questions Browse 14 questions and 21 answers
Is this able to be configured as a rifle with the pistol length gas system?
Mike k on Nov 14, 2018
BEST ANSWER: Yes ,the pistol gas system is used because it cycles the weapon much better than a rifle lenth gas system.
So basically, just remove the upper from my AR-15 and install this one with a BCG and charging handle and it's ready to go?
Buckman1 on May 28, 2019
BEST ANSWER: I have the same question.
Do you use standard 5.56 magazines on the 300AAC also?
William W on May 21, 2018
BEST ANSWER: yes you can use a 5.56 30 round ar mags, but for even more reliability if you are concerned they do make a 300 blk mags.
Is this classified as a pistol or as a short-barreled rifle and what if any paperwork do I need to process ?
Donald B on May 25, 2019
BEST ANSWER: No, the “pistol length” in the description is referring to the length of the gas tube. The barrel is 16”.
Will this work with an anderson lower?
mikey on May 27, 2019
BEST ANSWER: Its supposed to work with an Anderson lower but I haven't tried it with one. It works great with my Rock River x1 lower and the Spike lower I built for it.. Great, accurate upper..
How is this gas block attached to this
Keeper on May 26, 2019
BEST ANSWER: Same as always? Gas block + set screws - if you are asking if it is a clamp or set screw it is a set screw gas block.
Can I remove my upper and charging handle and BCG from my old Colt AR-15, put in on this upper, install it on my lower and it's ready to shoot?
Buckman1 on Jun 7, 2019
BEST ANSWER: Yes you can use your bcg and charging handle with this upper and put it right on your lower and your ready to shoot.
Will this work with the DPMS Panther 5.56 lower?
Ken E on Jun 7, 2019
BEST ANSWER: If the lower is milspec, then yes.
Will this work with sig m400 tread lower 5.56 lower?
Shane S on Jun 3, 2019
BEST ANSWER: If the m400 tread is like any other conventional lower receiver in regards to demension than yes it will fit, those mags that you use for the 223/556 can also be of use for the 300bo. Just be sure that you do not mix your 556/300bo ammo when loading!
do you use a 5.56 bolt carrier group?
clinton h on May 25, 2019
BEST ANSWER: yes, one of the benifits of 300 blackout is the use of common 556 parts.
Will this fit to an oracle without modifications?
Eric R on Jun 17, 2019
Can I get this in flat dark earth?
Wally K on Jun 17, 2019
Does it come with a flat earth M-look rail?
Tom P on Jun 9, 2019
i meant to say is will this wotk with a mil spec Anderson lower?
mikey on May 27, 2019
BEST ANSWER: Yes, if the lower is an ar-15 lower you should be good. When it comes to where the two pins hold the upper to the lower, mil-spec or commercial-spec, are no different. If that's where your confusion on the matter lies.


4.8 / 5.0
16 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Fantastic Product!!
I don't usually write reviews, but I had to leave some great feedback on this.

Delivery was fast. Fit and finish are amazing. Took it out yesterday to shoot paired with the Sig Whiskey 3 scope.

Dead accurate. 1" groups at 100 yards. Barrel stayed cool allowing continued accuracy.

I absolutely love this product.
June 17, 2019
Well built good n as always from psa
June 6, 2019
1 month ago
Happy with purchase.
So far so good. Looks great. Feels like a solid build. Cycles well with supersonic and subsonic ammo. Able to get pretty nice groups at 100yds. Overall I would recommend this product and PSA in general.
User submitted image
Added Jan 16, 2019
January 16, 2019
7 months ago
300 AAC Blackout 16"
First three shots with Hornady 110gr V-Max was dead on 1" group at 100 yards. Just in line with all other reviews of that ammo. FMJ do not shoot as accurate but then again they cost half. So far have shot 110gr V-max to 300 yards and it holds 4" groups. I plan to experiment with hand loading the Barnes Tac-TX 110 or 120gr with H110 powder soon.
December 29, 2018
Great quality for a great price
Fit and finish were good and had no problems with assembly. Shot group was good and improved over break-in.
November 30, 2018
7 months ago
Awesome finish , arrived in just over a week., but I haven't fired yet. If you have to, get on the waiting list. Its worth the wait.
November 18, 2018
8 months ago
Building a .300 AAC while teaching a Friend
I was helping a friend learn to build a .300 AAC he had the BCG and CH
October 5, 2018
10 months ago
Short Range Deer Hunter
Beautiful upper with quick delivery and perfect quality. Used a Palmetto lower I built with a Magpul SL stock. Zero’ed the Magpul Pro Irons at 100 yds and had consistent 1 inch groups with Sellier and Bellot 124 gr. The rifle functioned flawlessly and went through 40 rounds with no hiccups. Hope to zero the Primary Arms 1x6 I mounted to the rifle this week. It’s much lighter than my 308’s and still has the knockdown power needed for deer hunting. Thanks for the excellent quality and prices PSA!
User submitted image
Added Sep 16, 2018
September 16, 2018
Good, solid and inexpensive 300AAC upper
Took a while for this item to come back in stock, but it was worth the wait. Pretty good build quality, fit just fine on either of my AR15 lowers. Also put in a PSA nickel boron BCG. Used an extra scope setup I had lying around. Using my boresighter, was on paper at 50 yards, and zeroed in in about another 10 shots. Moved out to 100 yards and zeroed in there with another dozen.

Now just have to decide if I am going to get a tax stamp and put a suppressor on it and go subsonic on ammo.

Only thing that was not as expected was the weight of the upper. My other AR upper has a Magpul MOE handguard and the weight differential between them is significant. This one is much heavier. I still shot it well both on a bipod and offhand, was just surprised at the weight because this was the "lightweight" free float rail.

Overall, very pleased with the upper. With the PSA enhanced trigger and a cheapy Bushnell scope, can easily shoot 3 inch groups at 100 yards from a bipod. That is good enough for me.
PSA 300AAC upper with Bushnell scope and Magpul BUIS.
PSA 300AAC upper with Bushnell scope and Magpul BUIS.
July 29, 2018
1 year ago
High quality upper barrel assembly
This is very well built and the finish is very nice. It's my second purchase and I will be buying more. Next project is an AR10. I highly recommend PSA.
July 10, 2018
1 year ago

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