DAILY DEAL Exp. 6/25, 12pm EST
PSA 10.5" 5.56 NATO 1/7 Nitride 12" M-Lok Upper With MBUS Sight Set, & Vortex Sparc - No BCG or CH

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PSA 10.5" 5.56 NATO 1/7 Nitride 12" M-Lok Upper With MBUS Sight Set, & Vortex Sparc - No BCG or CH

In stock

Regular Price: $ 599.99

Special Price $ 349.99

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.

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 www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).

SKU: 5165450840
UPC: 5165450840
MFR#: 5165450840
  • Barrel Length: 10.5"
  • Barrel Profile: A2
  • Gas System: Carbine-Length
  • Barrel Steel: 4150 Chrome Moly 
  • 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 12" Slant End M-Lok
  • Bolt Carrier Group Included: No
  • Bolt Steel: N/A
  • Bolt Carrier Profile: N/A
  • Charging Handle Included: No
  • Sight Set: Magpul MBUS Sight Set, Black
  • Optic: Vortex SPARC AR Red Dot

**BCG & Charging Handle Not Included. 

Add To:

Barrel:  10.5" 4150V Chrome Moly vanadium steel barrel, Nitride treated and chambered in 5.56 NATO with a 1 in 7" twist. This carbine-length gas barrel is finished off with a PSA 12" Slant End 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.  These uppers are made for us right here in the USA by a mil-spec manufacturer.

Includes: Magpul MBUS Sight Set & Vortex Sparc AR 1x Red Dod:

Vortex Sparc AR 1x Red Dot: 

Simple—Fast—Effective—Point and Shoot. When you boil it down, those are the advantages of a red dot sight. And that’s what the SPARC AR delivers - all in a durable, lightweight, compact, and ultra-clean package. Digital rear-facing controls for power and dot brightness offer quick access and are viewable from the shooting position. 2 MOA dot diameter promotes a precise point of aim and automatically returns to last dot intensity used when powered up.

Unlimited eye relief and parallax free, the SPARC AR gets shooters on target fast. The SPARC AR is waterproof, fog proof and shockproof for ultimate durability. Unit automatically shuts off after 12 hours to prevent accidental battery rundown and operates using a common AAA battery. Duty rifle, home defense, recreation, the SPARC AR is built to handle all your red dot needs.



• Fully Multi-Coated ‒ Multiple anti-reflective coatings on all air-to-glass surfaces increase light transmission.

• Bright Red Dot ‒ Display is highly visible in daylight.

• Brightness Settings ‒ Provides 10 variable illumination settings—the lowest two settings are night-vision compatible.


• Nitrogen gas purging with o-rings-seals delivers fog proof, waterproof performance.

• Compact and lightweight single-piece chassis

• Waterproof ‒ O-ring seals prevent moisture, dust, and debris from penetrating for reliable performance in all environments.

• Shockproof ‒ Rugged construction withstands recoil and impact.

• Hard Anodized Finish ‒ Highly durable low-glare matte finish.

• Operating Temperature ‒ Rated from -4 degrees to +158 degrees Fahrenheit.


• Multi-Height Mount System ‒ Includes a spacer shim that can be utilized to provide two different mounting heights: lower 1/3 co-witness (40 mm) & absolute co-witness (37 mm).

• Non-critical eye relief for rapid target acquisition.

• 12-hour battery power with an auto-shutdown feature to maximize battery life (typical battery life is 300 hours at maximum brightness and 5,000 hours at minimum brightness setting).

SKU: 5165450840
SKU 5165450840
Brand Palmetto State Armory
Daily Deal Yes
Daily Deal Expires 6/25
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165450840

Questions and Answers

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Browse 30 questions Browse 30 questions and 34 answers
Is this barrel nitride or phosphate coated. Two of the three above references say nitride, one says phosphate. Which is it, please?
cvjagman748 on Feb 10, 2019
Whats the inside diameter of the handguard?
John B on Feb 9, 2019
BEST ANSWER: 1 3/8's inch!
What Bolt Carrier is recommended that would compliment the upper? rap
RICHARD P on Feb 11, 2019
BEST ANSWER: Whatever you can afford
What is the model number of the Vortex Sparc AR red dot optic?
cvjagman748 on Feb 10, 2019
BEST ANSWER: They only make one model...
does this have a adjustable gas block?
Don B on Feb 12, 2019
Can anyone explain why it takes "up to 15 days" to ship an upper? Buy a lower, next day service. Buy mags, optics etc next day service. Do they store the uppers in carbonate and need to defrost them for human appplication? Are they cast in granite and need to be chiseled out by magical forest gnomes with special upper receiver hammers?
Bentarm13 on Feb 22, 2019
BEST ANSWER: Ordered over a week ago, still hasn't shipped. they must be mining the metal or something it's mind boggling that it takes a company up to half a month to ship a product.
What is a SBR stamp? I am new to building AR-15s but am very mechanically inclined & really want to custom build my own but sort of budget friendly lol.
Jerry W on Feb 19, 2019
BEST ANSWER: It’s a "license" from the BATF. You need it if you put a upper under 16" on a AR lower. You don’t need it if you put a upper under 16" on a pistol lower. Do your homework and make sure you understand the rules before you start building.
How far does the flash can protrude from the end of the handguard?
David on Mar 13, 2019
BEST ANSWER: It stands out from the top of the hand guard about 1 1/4 inches and 1 3/4 inches from the bottom.
Would this be a good pistol barrel?
tony n on Mar 8, 2019
BEST ANSWER: It works as a great as a pistol upper for me. I also use the SB3 brace and really like the weight and balance of this pistol. I have a Spikes lower on this build and so far this thing feeds all types of ammo from a variety of magazines without issue.
Is this come with trigger group?
Chaofu L on Mar 26, 2019
BEST ANSWER: Nope. It is only the upper. The trigger group goes in the lower.
Can’t you just tack weld one of those 5.5-6” faux “silencer” tubes onto the barrel and be compliant and look cool at the same time?
DJ on Mar 17, 2019
Will this upper fit a bushmaster 5.56 lower?
THMOO on Feb 23, 2019
BEST ANSWER: If it's mil-spec YES. If not No.
Do the MBUS sights absolute or lower 1/3 co-witness with the Sparc optic?
Aaron W on Mar 13, 2019
BEST ANSWER: The Sparc optic comes with a base plate riser that allows you to do either.
Is the "mbus" sight set, that comes with this, plastic or metal ? I have seen both.
Bryan E on Feb 23, 2019
BEST ANSWER: It is made of a polymer!
Will this fit with a S&W sport 2 lower and bolt carrier group?
Kenny on Feb 14, 2019
BEST ANSWER: If it’s a rifle lower than you would have an SBR, so beware.
Is this CA legal?
Jules Z on Jun 24, 2019
BEST ANSWER: Look at it this way. It’s only illegal if you get caught ;)
What muzzle break would you recommend with this. The hand guard is longer than the barrel and I don’t want to be spitting fire on the handguard. Any breaks that have removable blast forwarding devices?
Tyler C on Jun 11, 2019
BEST ANSWER: It has the flash can which forces the blast forward, I just kept that on it. Doug
Is the flash can removable or can I add it to the overall length?
Kubkimchar on May 14, 2019
BEST ANSWER: It is removable.
Is this compatible with the mp sport 2 ar 15?
Dylan T on Apr 8, 2019
BEST ANSWER: YES any mil-spec lower will work.
How do I get this barrel but off to change the upper?
Tyler C on Apr 3, 2019
BEST ANSWER: The same way you remove any other barrel nut.
After its shipped how long will it take?
Joshua W on Mar 27, 2019
BEST ANSWER: As long as it takes.
Piston driven or not?
Tyler C on Mar 25, 2019
Will this work on a Bushmaster Lower?
BillG on Mar 13, 2019
BEST ANSWER: It will fit any mil-spec lower.
Is the barrel Nitrided?
Michael P on Feb 23, 2019
BEST ANSWER: If you read the description it will answer your question.
Is this a kit or a complete upper assembly (minus BCG and CH)?
Ninja C on Feb 15, 2019
BEST ANSWER: Complete upper minus BCG and charging handle.
Is this considered pistol upper or SBR?
Agnieszka on Feb 9, 2019
BEST ANSWER: If mounted on a pistol lower it is a pistol. If mounted on a rifle lower you need sbr stamp
can you ship this to California?
Rob B on Jun 7, 2019
Does anyone have this on an Anderson lower? I was told it may need shimmed.
Sean H on Apr 7, 2019
will this ship to California?
Emmanuel D on Feb 24, 2019
Is this or has this been offered in 300 Blackout?
Saterry on Feb 20, 2019


4.6 / 5.0
33 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Website is very user friendly and ordering simple but very secure. Products arrived earlier than expected
Great Price Point, Solid Product
PSA on the Right
PSA on the Right
June 18, 2019
1 month ago
Great kit
This kit is great; paired perfectly with an Aero Precision gen 2 lower.
June 17, 2019
3 months ago
Love it! Converted to .22 with partial concealed can.
Great upper, well built, even better priced!
Great American company with a great business philosophy.
June 16, 2019
1 month ago
Wicked Awesome
I was thrilled to top off my Pistol build with this beauty. I had to wait awhile for it to come back in stock, and when it did, I jumped at the opportunity. Tight tolerances with my Anderson Manufacturing Lower, and perfect takedown pin function. The Vortex Sparc and MBUS were icing on the cake. I could not be happier with my purchase.
June 13, 2019
2 months ago
Works good
I'm happy with it, put together well. I did take it apart and reassemble to insure it was ok.
As for Shipping. I was well packed. What I didn't like was the unknown shipping date.
June 11, 2019
2 months ago
Break it in well before any accuracy test and you wont be disappointed.
Fit and finish are great as always. Functioned 100%. Accuracy started out all over the place but came around after 60 rounds fired fairly rapidly. Started with a 50% hit ratio on a 12" plate. When finished it was printing a 3-4" group with tula steel cased ammo. Better than expected 100yrd accuracy with cheap ammo and a red dot. I'll be getting another.
My father and I both have the 10.5" 556 pistol kits.  They've been 100%. Guns need 200rnds to brk-in
My father and I both have the 10.5" 556 pistol kits. They've been 100%. Guns need 200rnds to brk-in
June 10, 2019
2 months ago
I love this thing it’s a blast to shoot get one it will be a great time
June 8, 2019
2 months ago
Has made a great pistol
June 5, 2019
3 months ago
Very nice product for an absolutely excellent price. Definitely recommended.
Nice product for a great price.
June 4, 2019
3 months ago
Ar15 pistol
Everything pictured seems to be quality parts haven’t had one problem with it yet
May 26, 2019
2 months ago

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