Side view of PSA 10.5" ar 15 barreled upper assembly.

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PSA 10.5" 5.56 Lightweight M-lok Slant 12" Upper With MBUS Sight Set, BCG, CH, & Fluted Flash Can - 516447012


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: 516447012
UPC: 516447012
MFR#: 516447012
  • Barrel Length: 10.5"
  • Barrel Profile: A2
  • Gas System: Carbine-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: 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, melonite treated for durability 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: 516447012
SKU 516447012
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price N/A
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 516447012

Questions and Answers

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Browse 18 questions Browse 18 questions and 48 answers
If I removed the flash can, what would the overall length be when added to a PSA AR15 Complete MOE EPT SBA3 Lower with the brace fully extended? I'm trying to figure out if the length would be greater than 26 inches so I could include a vertical-fore grip.
Donald R on Aug 27, 2018
PSA 10.5
PSA 10.5" 5.56 Lightweight M-lok Slant 12" Upper With MBUS Sight Set, BCG, CH, & Fluted Flash Can - 516447012
PSA AR15 Complete MOE EPT SBA3 Lower - 5165448150
PSA AR15 Complete MOE EPT SBA3 Lower - 5165448150
BEST ANSWER: Overall length does not include muzzle device, you measure from the threading of the barrel to the end of the receiver extension for overall length. Unless you pin and weld a muzzle device, then by law it becomes a part of the barrel.
Does anybody know if a Saker 5.56 can will fit with this rail? Thanks!
Ghost on May 16, 2018
Do these uppers come already assembled?
Anthony D on Jun 27, 2018
Yes. They are fully assembled. However mine required slight relief of the mounting holes to smoothly align the pins. (Read fine rat-tail file and 10 min elbow grease)
Are there any 9 or 10inch hanguards that can be swapped out on this upper without changing the barrel nut? PSA or otherwise? I noticed the MI insignia on the handguard, so maybe one of those? I want to add a brake without having it covered by the handguard. thanks!
jo w on Dec 21, 2018
What is the inside diameter of the hand guard?
Joe M on May 29, 2018
BEST ANSWER: 1.5" left to right lil higher on top side for gas tube.
Are those iron sights or polymer?
mark j on Jun 30, 2018
BEST ANSWER: I received polymer as well but they seem very sturdy
Does this have ad mount on side of rail??
Bob B on Aug 27, 2018
BEST ANSWER: There are M-lok slots at the 3, 6, and 9 o'clock positions and QD sockets at 3 and 9 o'clock
I don’t need to buy a pistol lower with this upper do I?
John T on Jun 23, 2018
BEST ANSWER: This upper can be attached to any lower set up as a pistol. Limitations are you can't use a lower that's already registered as a rifle. Without changing the classification. Any stripped lower register as a lower will be good to go. But basically as long as the lower is millspec it will function
Is the can pinned and welded?
alexander r on Jul 17, 2019
BEST ANSWER: No it is not. It's not a can just a flash forwarding device. Works great on a small package.
Can you replace the flash can with a Lantau dragon or will it be to close to the hand guard and damage it?
Raymond B on Jun 29, 2018
BEST ANSWER: The hand guard covers the end of the barrel a little, just enough to make it so that if you want to replace the flash can, you'll have to remove the hand guard first so you have space to work. The hand guard comes off easy and the only issue you might have is in making sure you don't scratch anything as you take it off. It's not anymore difficult than replacing the muzzle device, it's just a couple more steps in the process.
I need this same unit in 300 blk?
Tim R on May 31, 2018
BEST ANSWER: Then you need to buy a upper chambered in 300blk you can still slap it on any 5.56 or multi cal lower you can use your same AR mags as well only thing different is the upper.
I have a lower with build kit that was purchased in 08, can I use them on this upper? Any legal issues? This will be my first build.
Dan H on Apr 8, 2019
BEST ANSWER: As long as the kit is with a pistol brace or you have a SBR lower you’re good.
Will a Silencerco Omega fit inside this rail? The silencer has a 1.5" outer diameter.
txoracle on Jun 24, 2018
BEST ANSWER: My handguard measures just under 1.5 inches ID.
“Overall length 21 inches” - Is this saying that the upper alone is 21” long?
Nathan A on May 27, 2018
BEST ANSWER: Yes, the entire upper
What buffer should I use and should I get an adjustable gas block?
Ralph on May 22, 2018
BEST ANSWER: Carbine buffer and no need to change gas block
Does the rail say "made in USA" it appears in the product photo but not the photos in the reviews section?
Brian M on Sep 25, 2018
Received this complete upper this week and there is no forging stamp on it. I have other PSA uppers and along with some other manufacturers uppers and they all have the forging stamp. Why is this not stamped?
Michael R on Aug 15, 2018
Who makes this barrel and upper Receiver? I know fn makes a lot of their premium or chf stuff but I would like to know where this barrel comes from
Jimmyboi on Aug 13, 2018


4.8 / 5.0
47 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Another great buy from PSA
So, a few weeks ago i bought the 10.5 inch with the basic plastic hand-guard upper and it was fantastic. I order this one Monday, got it tuesday afternoon. Looks great, Rear MBUS was a little snug going on the upper but that was fine. Can't wait to try it out.
July 3, 2019
2 weeks ago
Can’t beat it
One of my favorite 10.5 rifles
User submitted image
Added May 2, 2019
May 3, 2019
1 year ago
Love it!
Awesome upper. Zero reliability issues so far. Inside diameter of the rail is 1.2 inches so finding a can that will fit under will be difficult.
April 8, 2019
1 year ago
This is so cute.
You cant take this upper seriously, can you? Quality is great, it works great, but that "flute" on the end is funny. I am sure it is functional in that it directs all the unburnt gasses away from the shooter, but it's like a planter on my windowsill. The foregrip/rail is ok also, it's kinda bulky in a needless way. But, for that price for a complete upper including the BCG and Charge Handle and Quality sights, shipped? B***H, you can't beat it with a stick.
February 21, 2019
1 year ago
Quality Product & Exactly What I Wanted.
This upper is great! I was able to get the nickel boron bolt carrier I wanted separately and the MBUS sights are perfect as backups to my red dot. Build quality is exceptional With everything tightened to torque specifications and just like every Palmetto State product, it’s a great purchase for the money.
February 8, 2019
6 months ago
Everything I have bought from pad has been exactly what I was expecting. Very good products . The only problem I have is with this and my 16 556 rifle kit I ordered both said comes with the magpul mbus sights front and rear and both kits did not come with them. Everything else is excellent and I have pumped hundreds of rounds with out a issue. It would have got 5 stars but two kits I ordered didn’t come with the sights which even my receipt says it is supposed to. Will change rating if there customer service does something about this. I’m going to contact them this week and see what they will do. I will continue to buy from PSA as everything is quality and for the price you can’t beat it!
February 6, 2019
7 months ago
Great little rifle
I have taken rifle to the range three times and it has functioned flawlessly. I have expended approximatley a thousand rounds of ammunition with no failures to fire or failures to feed. I love the size and the balance of the weapon system. The MLOK forend is thin and allows a natural purchase on the weapon without unecessary bulk. So far accuracy has been excellent and the weapon is fun to shoot. The enhanced polished trigger is an excellent trigger compared to mil spec triggers, I was very surprised by this. The value of this package is unmatched.
User submitted image
Added Jan 2, 2019
January 2, 2019
1 year ago
This thing runs like scolded dog. Great upper for the price. Paired it with a frontier armory polymer lower to save some weight.
December 5, 2018
Nice upper
No problems many range trips good set up a little heavy but nice very nice
December 4, 2018
1 year ago
Very Nice
Fit and finish were perfect. This was my first purchase from PSA, and this upper paired to my PSA lower with SB3 brace was a match made in AR pistol heaven!!!!!
User submitted image
User submitted image
User submitted image
November 4, 2018
10 months ago

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