Nitride 2a 300 aac blackout upper

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PSA 7.5" 300AAC Blackout 1/7 Nitride 2A Armament 10" M-Lok Upper With BCG & CH - 5165449805


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: 5165449805
UPC: 5165449805
MFR#: 5165449805

Upper Receiver Type: Forged Standard
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Coating: Hardcoat Anodized
Muzzle Device: PSA Fluted Flash Can
Barrel Caliber: 300AAC Blackout
Barrel Profile: Heavy
Barrel Material4150V CMV
Barrel Length: 7.5"
Barrel Thread Pitch: 5/8 x 24
Barrel Twist Ratio: 1:7
Barrel Finish: Nitride
Barrel Lining: Nitride 
Gas Block Size: .750
Gas Block Type: Low Profile
Gas System: Pistol
Handguard Length: 10"
Handguard Type: M-LOK
Handguard Color: Black
Rail Profile: Standard
BCG Caliber: 5.56
BCG Profile: Full Auto
BCG Finish: Phosphate
BCG Testing: MP
BCG Logo: None
BCG Bolt Type: Carpenter 158
Charging Handle: 7075 T6 Aluminum

Add To:

This upper features a 2A Armament 10” Lightweight M-Lok rail that can be used to attach M-LOK rail accessories giving you the ability to customize your build to suit your needs. Includes bolt carrier group and charging handle. Comes installed with the Palmetto State Armory Fluted Flash Can that is designed to direct the muzzle gases and muzzle flash forward and away from the shooter. This device is not designed to reduce recoil, muzzle rise, or flash.

SKU: 5165449805
SKU 5165449805
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price $0.00
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165449805

Questions and Answers

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Browse 9 questions Browse 9 questions and 21 answers
What is the inside diameter of the handguard? Would like to use this with a suppressor with a diameter of 1.375”.
David H on Oct 12, 2018
BEST ANSWER: The muzzle device they're using is the PSA fluted flash can. From this website it says the OD for this muzzle device is 1.2"
Is the gas block adjustable?
Yetti on Oct 13, 2018
BEST ANSWER: no its not
What type of BCG comes with it? Is it a true m16 BCG or an AR BCG or a slightly neutered BCG
William W on Nov 1, 2018
BEST ANSWER: YO! READ PEOPLE >>>-------> BCG Profile: Full Auto: It's in the description
What’s the approximate weight of the upper?
Jay Blak on Nov 10, 2018
Are there tabs or something to keep the handrail from spinning?
Kenny V on Nov 17, 2018
BEST ANSWER: Nope, and mine arrived warped. They are also not allowed to provide us with the required handguard torque plate. PSA still has not replied to the warped email either, sent months ago. They need to adopt a different style handguard if they cant supply the one thing that keeps it straight and secure to the barrel nut.
What is the overall length of this upper? Also, what happened to the negative review of this upper that was up a couple of weeks ago?
brad l on Dec 30, 2018
Does this upper stick out past the barrel? It shows 7.5” barrel and 10” upper so I’d like to know. I can’t tell from the pic. Thanks in advance.
Bruening56 on Dec 28, 2018
BEST ANSWER: The barrel itself is indeed shorter than the handguard, but the attached muzzle device extends that length just past the end of the handguard. The muzzle device sticks out about 1/4 inch past the end of the handguard.
Is the muzzle device removable? For a silencer.
Hanks on Dec 16, 2018
BEST ANSWER: Yes, but finding a silencer that will fit is the issue. I have pretty quickly figured out I will have to change the handguard.
When will this be available again, I wold really like to purchase one?
William F on Feb 21, 2019


4.6 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
.300 blk out upper
My .300 upper is sexy with it flash can peeking out of the front of the hand gaurd. Decked out with my dot and 45 flips.
April 30, 2019
3 months ago
This upper is great ran 200 rounds through it with no problems. Would buy palmetto uppers again
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April 24, 2019
5 months ago
Good product at good prices
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Added Apr 16, 2019
April 16, 2019
5 months ago
Another top tier upper at an amazing deal.
Love it! Actually put it on a Spike's Snowflake lower. Sorry Palmetto. Another awesome quality upper for an unbeatable price. Palmetto is always my go to for my builds.
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March 12, 2019
6 months ago
Cycling and feed issues
I have tried to put several hundred rounds through this and it has the worst cycling and feed issues of any of my AR builds. Ive tried different magazines, Different brands of ammo, Sub and Super sonic ammo, different bolt carrier etc etc and nothing seems to fix it. Im certainly open to suggestions because I would love to make this work. My next step is to do a new gas tube and gas block... possibly larger?

Super disappointed so far.... But im hopeful.
Looks pretty.... hopefully eventually it will work!!
Looks pretty.... hopefully eventually it will work!!
March 4, 2019
6 months ago
Response from Palmetto State Armory
We do apologize for that. Since all of our parts and firearms are covered by our Lifetime Warranty, if you have any issues arise from the craftsmanship of the product, we can either have select parts sent to you for you to replace, or we can have the item brought in, at no cost to you, so we can repair or replace the defective product. Please contact Customer Service so we may resolve this issue.
March 5, 2019
Casey S
PSA 7.5" 300AAC Blackout 1/8 Nitride 2A Armament 10" M-Lok Upper
I really liked the price I got it for. Hand guard is nice really like it fit my Anderson lower really well. just waiting on weather to take it out and shoot really want to see how the flash can sounds.Really nice setup
300 pistol
300 pistol
February 22, 2019
7 months ago
It’s badass
It’s so amazing I bought 2!
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Added Feb 13, 2019
February 13, 2019
7 months ago
I love the size and and the value of this completed upper
So far so good. I’ve not had the chance to put many rounds through it, but I zeroed it in with a bore laser to start, then went and put five rounds through it. It shot very well!
February 13, 2019
7 months ago
Awesome Firearm
Love the way this build is starting out.
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February 11, 2019
6 months ago
Looks great ! No issues as usual with PSA products
February 5, 2019
6 months ago

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