PSA 7" 5.56 NATO 1/7 Nitride 9" Lightweight M-Lok Upper - With BCG, CH, & Fluted Flash Can - 5165447972

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PSA 7" 5.56 NATO 1/7 Nitride 9" Lightweight M-Lok Upper - With BCG, CH, & Fluted Flash Can - 5165447972


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: 5165447972
UPC: 5165447972
MFR#: 5165447972

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" Lightweight M-Lok Free Float Rail
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" Lightweight 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.


SKU: 5165447972
SKU 5165447972
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 5165447972

Questions and Answers

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Browse 7 questions Browse 7 questions and 8 answers
If PSA made this in 10.5" with a carbine length gas system it would be perfect. The smooth top M-Lok upper and "flush" flash-can are great. PSA, are there any plans on making such an upper? PSA fans, do you agree?
Ryan E on Apr 13, 2018
Will there be a version w/o BCG and charging handle any time soon?
CivilAffairian on Jun 3, 2018
What is the internal diameter of the handguard at the end of the barrel?
Ferd47 on May 31, 2018
BEST ANSWER: Approximately 1 5/16 of an inch or with a micrometer it’s 1350 one hundredth
Is there a section of M-Lok on the bottom of this hand guard to attach rail segments, angled grips, etc. too?
Jake G on Apr 29, 2018
BEST ANSWER: Yes, but there's not a lot of room. The gas block and the flash can block a couple of the slots from allowing a M-Lok screw to fit.
What is the difference between this packages upper and the freedom upper?
Raymond B on May 30, 2018
BEST ANSWER: I believe the difference is the pic rail across the top of the fore end.
Lightweight doesn't have it all the way across, Freedom does.
Do you guys know the weight?
Jonathan L on Jun 11, 2018
Where did he get the sliding cheek/stock in the pics below? Never mind I think it's a folding attachment??
Chris on Jun 3, 2018


4.7 / 5.0
21 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Good price for quality upper.
Would recommend for the price. Not my first buy from PSA, and won't be my last. Quick delivery. The BCG seems a bit stiff, maybe just needs broken in, but still has been fun shooting. That's my only reason for not giving 5 stars.
Fun build.  BCG a little "stiff" cycling, hope it loosens up with use. Good price and fast delivery.
Fun build. BCG a little "stiff" cycling, hope it loosens up with use. Good price and fast delivery.
July 6, 2018
1 month ago
SBR 7" completed Upper review
Very impressed with every aspect of the transaction, shipping time and product
User submitted image
Added Jul 5, 2018
July 6, 2018
1 month ago
Feels solid and looks great
Have not gotten it out to the range to shoot. It feels solid and looks great attached to my PSA lower with sb tactical pdw brace. Will have an updated review once I put some rounds through it.
User submitted image
Added Jul 2, 2018
July 2, 2018
1 month ago
Great upper handrail is perfect for SBR
July 1, 2018
2 months ago
PSA "Shawty"
outstanding weapon. quality components and precise fitment/tolerance on PSA lower. shoots like a dream. like the indent on the free float rail--allows for a "C" grip with thumb over rail. co witnessed a Bushnell TSA and BUIS for easy target acquisition. it is our family's Home and RV defense weapon. LITE weapon for mom and children to practice and wield. for practice, placed a CMMG 22lr bolt carrier group for guilt free shooting. will chew and spit FIRE with anything you feed it. utilization is for defensive CQB out to 50 yds. outstanding quality product and customer service from PSA.
PSA "Shawty"
PSA "Shawty"
June 30, 2018
1 month ago
Looks great
This upper looks amazing. Really digging the look of the fluted flash can too
June 27, 2018
2 months ago
I will be a repeat customer for years to come
Loving my PSA upper and lower. Ive put about 300 rounds through it with 0 issues so far.
User submitted image
User submitted image
June 16, 2018
2 months ago
I love it! Great quality.
I absolutely love this upper. It was exactly what I was looking for. I went and shot it two days ago and and it ran perfect. Very happy with the accuracy and with the quality of the build. Not to mention it looks awesome.
User submitted image
Added Jun 16, 2018
June 16, 2018
2 months ago
Sweet little upper
Great little upper, unfortunately it came with few nicks which is disappointing otherwise love it..
June 10, 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 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.
June 11, 2018
Casey S
Good upper. I'llbe getting another in 300 blk
Great fit and finish. Great price and nothing was crooked.
User submitted image
Added Jun 5, 2018
June 5, 2018
2 months ago

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