PSA 7" 5.56 NATO 1/7 Nitride 9" M-Lok Upper With Fluted Flash Can, BCG, CH, & MBUS Sight Set - 5165447626

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PSA 7" 5.56 NATO 1/7 Nitride 9" M-Lok Upper With Fluted Flash Can, BCG, CH, & MBUS Sight Set - 5165447626


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: 5165447626
UPC: 5165447626
MFR#: 5165447626

Barrel Length: 7"
Barrel Profile: Heavy
Gas System: Pistol-length
Barrel Steel: 4150V Chrome Moly Vanadium
Barrel Finish: Nitride
Chrome Lining: No
Muzzle Thread: 1/2-28
Chamber: 5.56 NATO 
Twist Rate: 1:7
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: Low-profile
Muzzle Device: PSA Fluted Flash Can
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 9" M-Lok Free Float Rail
Optics: Magpul Front and Rear MBUS Back Up Sights
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle Included: Yes

Add To:

Barrel: 7" 4150V Chrome Moly vanadium steel, melonite treated for durability and chambered in 5.56 NATO with a 1 in 7" twist. Pistol-length gas barrel is finished off with a PSA 9" M-Lok Rail, a low profile gas block and a PSA Fluted Flash Can.

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.

Flash Can: Palmetto State Armory Fluted "FLASH CAN". This is a solid 6061 aluminum device that is designed to direct muzzle gases and the muzzle flash forward. Threaded 1/2-28 for 5.56 NATO. Black military-style hard anodizing. THIS DEVICE IS NOT DESIGNED TO REDUCE RECOIL, MUZZLE RISE, OR FLASH SIGNATURE. This device is designed to direct gasses and noise forward away from the shooter and enhance the weapon's appearance.

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.

Includes: Magpul MBUS Sight Set, Black

SKU: 5165447626
SKU 5165447626
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? No
SKU: 5165447626

Questions and Answers

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Browse 9 questions Browse 9 questions and 17 answers
What is the overall length?
John W on Jun 5, 2018
BEST ANSWER: PSA customer service says approximately 16 inches
Is the included Bolt Carrier Group the "standard" Palmetto State Armory or the "premium" Palmetto State Armory?
HeavyHands on Jun 24, 2018
Does this upper have a sling QD point?
HeavyHands on Jun 19, 2018
BEST ANSWER: No , however if you are going to buy the arm brace it comes with a single point sling adapter
5.56 and .223 or just 5.56 nato?
Don S on Jun 22, 2018
BEST ANSWER: Both, great product. I have purchased a lot of parts from PSA and have not had any issues.
Do you have to use one of your 9MM lowers?
Scott W on Apr 24, 2018
BEST ANSWER: This is a 5.56 upper receiver, so you would need to use an AR-15 lower.
How long before this item will be back in stock?
Big Daddy on Jul 22, 2018
What is the weight difference between this and the lightweight M-LOK?
Ricardo D on Jun 29, 2018
is the flash can easy to remove and replace with another muzzle if desired?
edgrrr on Jun 26, 2018
What is the overall length of this upper assembly?
HeavyHands on Jun 23, 2018


4.6 / 5.0
30 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
You're taking a gamble.
I am one of the unlucky few who've had problems with my PSA product.

I ordered this upper 4 months ago, in the time since then, I had to RMA it once and im waiting to RMA it again now for a second time.

The first time it was cause the guys at PSA torqued the barrel nut down to 9999ftlbs, so I had to return it for them to loosen it, even my local gunsmith couldnt break it loose.

The second time is now, I literally just got back from the range, finally got time to take it out to shoot.. and what happened?

My extractor is ruined. I didnt even get to fire a single round. The first round I chambered jammed up, appeared that the cartridge didnt seat fully in the chamber, and the weapon was stuck out of battery, this happened 3 more times before I gave up. Attached are images of the bolt head and the malfunction I was cursed with and could not avoid.
August 2, 2018
3 months ago
Response from Palmetto State Armory
We do apologize for that. Since all of our parts and firearms are covered by our Unlimited Lifetime Warranty, if you have any issues arise from the craftsmanship of the product, 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.
August 2, 2018
Casey S
Amazing upper. PSA DID IT AGAIN!!! This is my 2nd upper from PSA. Many more to come.
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July 22, 2018
1 month ago
Super love. Slim and all there!
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Added Jul 7, 2018
July 7, 2018
4 months ago
Loved it!
PSA service was excellent. Ordered and received in less than 1 week. The upper was extremely nice and fit perfectly on my PSA lower. Shot around 120 rounds with zero issues. Will definitely buy PSA products again.
July 6, 2018
2 months ago
Love it! Perfect fit! Loud as hell, and it's a flame thrower!
July 3, 2018
4 months ago
I have many of these uppers. They always run flawless for me.
June 27, 2018
5 months ago
It's a great looking and great functioning product
June 22, 2018
5 months ago
Great company
You just cannot beat Palmetto products flat out
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June 16, 2018
3 months ago
Nice build
Great upper receiver. Just like advertised. FYI it will not fit an mlok rail at the 9, 6 and 3 o'clock position forward end due to clearance with the flash can and does not come with the flip-up sights. Mine did not at least. 300 rounds at the range with no issues.
June 13, 2018
3 months ago
Great upper! Shoots great and compact!
Love it! Shoots great with my SB adjustable brace. Thought it might be loud but can’t say that I noticed much difference from my 16” AR.
June 13, 2018
3 months ago

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