PSA 10.5" 5.56 Lightweight M-lok Slant 12" Upper With MBUS Sight Set, BCG, CH, & Fluted Flash Can - 516447128

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PSA 10.5" 5.56 Lightweight M-lok Slant 12" Upper With MBUS Sight Set, BCG, CH, & Fluted Flash Can - 516447128

In stock

Regular Price: $ 539.99

Special Price $ 369.99

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.

SKU: 516447128
UPC: 516447128
MFR#: 516447128
  • Barrel Length: 10.5"
  • Barrel Profile: A2
  • Gas System: Carbine-length
  • Barrel Steel: 4150V Chrome Moly Vanadium
  • Barrel Finish: Phosphate 
  • 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: Palmetto State Armory Fluted Flash Can
  • Receiver Material: Forged 7075 T6
  • Receiver Type: M4
  • Hand guard Type: PSA 12" Slant End M-Lok Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-auto
  • Charging Handle included: Yes
  • Includes: Magpul MBUS Sight Set, Black
  • Overall Length: 21"
  • Weight as configured: 3.45 lbs.

Add To:

Barrel: 10.5" 4150V Chrome Moly vanadium steel, phosphate coated and chambered in 5.56 NATO with a 1 in 7" twist. Carbine length gas barrel is finished off with a PSA 12" Slant End M-lok Rail, a low profile gas block and a Palmetto State State Armory 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's new 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 mil-spec 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: 516447128
SKU 516447128
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 516447128

Questions and Answers

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Browse 13 questions Browse 13 questions and 44 answers
If i take off the psa flash can off Is it possible to fit a suppressor inside the handrail?
Dillan C on Apr 30, 2018
BEST ANSWER: If you have a VERY small diameter suppressor, then yes. Otherwise no. This wouldn't work for my can, but I trimmed the handrail back and mounted the flash suppressor that my can mounts to and used it until I can get a proper handrail.
Are the parts on this upper the ''premium'' ones or standard?
Teej1 on May 21, 2018
BEST ANSWER: The parts are close to premium. But for the money, you are receiving premium parts for the low cost.
Does it come fully assembled and is all I need a complete lower?
Mikael on Jun 5, 2018
BEST ANSWER: Yes the upper is fully assembled. You will have to install the mbus sights but this only requires a flathead screwdriver. Naturally I would remove the bcg and charging handle, then clean and oil everything, and reassemble. Best of luck.
Will an A2 flash suppressor work on this setup?
MStewart on May 1, 2018
BEST ANSWER: I believe so. I own this upper and I would say the flash can is excellent. Maybe you have a good reason to want an A2 so i will say you need to know if the can is pinned on and the threading on the barrel. I do not have any good input on those two. I do believe PSA has the same upper with an A2 and it is cheaper.
Would a Kineti-Tech Blast Shield work here? If not with the included flash can, then with the Kineti-Tech muzzle brake? Would there be enough clearance?
Paul R on Apr 30, 2018
BEST ANSWER: Probably not. I'm,looking to change the hangars so u can do a Smith vortex
What kind of lower should I buy for this?
Nelson I on May 21, 2018
BEST ANSWER: If you want the most cost effective lower that is extreme in quality, get an Aero lower. One step down (in my opinion) but still excellent for the price is Anderson. You can step up in price and style from the Aero and equal in quality is Spikes Tactical. When you get to the premium brand names that do not make in house, they are typically made by Aero and they stamp the premium name brand on the lower.
Can anyone who owns this handguard tell me what the I.D. of it is? Thanks in advance.
Matthew W on May 2, 2018
BEST ANSWER: The hand guard is a close fit on the flash can. Flash can measures 1.2 inches.
Will this fit an SW m&p sport 2? Drop in.
Winner on Aug 16, 2018
BEST ANSWER: Yes, but having a 10.5” barrel will require a pistol brace unless you have a tax stamp
Does anybody know if a Saker 5.56 can will fit with this rail? Thanks!
Ghost on May 16, 2018
BEST ANSWER: The opening on this Mlok is about 1.5 inches. The Saker being 1.5 inches in diameter I’d have to say yes it will fit and if it didn’t the slightest I mean slightest bit of removal of material around the inside of the hand guard might be necessary and we are talking millimeters or less. But if I were a betting man I would say it would fit and would fit nicely. Hope it helps.
With the recessed muzzle device, does the handguard get hotter? Also hows the psa one at directing thing forward, is a KAK slimline worth it?
Paul R on May 14, 2018
BEST ANSWER: I put a hand stop and handrail covers to protect from the heat. PSA device is nice, works as described!
Will this upper fit on my POF Renegade+?
Doug P on Aug 7, 2018
I'm building an ar pistol with this upper, I'm gonna use a mil spec buffer tube, what weight buffer should I buy to get the best performance out of this upper?
Austin G on May 23, 2018
What is the torque specs on the 2 bolts holding the rail on?
Sam S on May 18, 2018


4.8 / 5.0
42 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great upper!!!
This is my first PSA AR-15 related product purchase. I purchased this upper with a PSA pistol lower. Shot for the first time yesterday. It ran perfect. Very well made and like everything about it thus far, granted I just got it. I am running just the back up sights and is accurate enough for intended purpose for the time being. I like the looks of the flash can. It may be louder than a 16 inch but I cant say that for certain, it seems to do what it is designed to do and I didnt notice it being louder than my other ar's while using hearing protection. The only complaint I have is one of the qd sling sockets is defective. I stole a magpul rsa from another rifle so I could attach my sling. Great product. If the qd sling point was not defective I would give 5 stars
September 8, 2018
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
September 10, 2018
Casey S
More than expected
I ordered this to finish a build our of spare parts I had laying around to make a truck gun to drag around. I was expecting a long wait from what I was told about Palmetto but five days later it was delivered excellent work Palmetto. I took this out to see what it would do, I wanted something that would be easy to use in a truck and be accurate at 50m and when I got this sighted in I could ring a 6 inch plate at 100m every time and so far I have put about 550 rounds through it without a hiccup. Way more than I expected and I highly recommend it.
August 28, 2018
7 months ago
Neck breaker.
Paired with an Anderson arms mil spec and a SB3 tac brace and this thing has quickly turned into a neck breaker at the range. Stands out from the crowd and runs beautifully.
SB3 + Anderson Punisher + The Boom. Vortex on top.
SB3 + Anderson Punisher + The Boom. Vortex on top.
July 24, 2018
4 months ago
Sweet AR Pistol set up.
Everything seems like it's high quality and it shoots awesome. Very fun!
I really like this new pistol. Shoots flawlessly and seems very high quality.
I really like this new pistol. Shoots flawlessly and seems very high quality.
July 18, 2018
4 months ago
Built two of these. Love em. Very cool.
July 18, 2018
4 months ago
Awesome sauce
Great upper. No complaints. Very accurate. I didn’t even have to adjust the sights.
Great upper, no complaints. Very accurate. I didn’t even have to adjust the sights.
Great upper, no complaints. Very accurate. I didn’t even have to adjust the sights.
July 10, 2018
3 months ago
Love it.
Fantastic !!!! Runs great.
July 1, 2018
4 months ago
Absolutely perfect. I Would recommend without hesitation.
June 26, 2018
4 months ago
Get em while you can
Fast shipping and pin on fun. I started zero in at 15 yards and the holes touched. This thing shoots great. Get ya' one.
June 23, 2018
4 months ago
Great lower, excellent for CQB and very easy to install and add ambi upgrades
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June 22, 2018
4 months ago

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