PSA 7" Nitride 5.56 1/7 6" Lightweight M-Lok Upper - With BCG, Charging Handle, & Vortex Sparc - 5165447586

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PSA 7" Nitride 5.56 1/7 6" Lightweight M-Lok Upper - With BCG, Charging Handle, & Vortex Sparc - 5165447586


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.

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: 5165447586
UPC: 5165447586
MFR#: 5165447586
  • Barrel Length: 7"
  • Barrel Profile: Pistol
  • 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: A2 Bird Cage
  • Receiver Material: Forged 7075 T6
  • Receiver Type: M4
  • Handguard Type: PSA 6" Lightweight M-Lok
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-auto
  • Charging Handle Included: Yes
  • Overall Length: 17.5"
  • Optic: Vortex Sparc AR 1x Red Dot 

Add To:

Barrel:  7" 4150V Chrome Moly vanadium steel, nitride treated for accuracy and durability, and chambered in 5.56 NATO with a 1 in 7" twist. Pistol-length gas barrel is finished off with an anodized PSA 6" Lightweight  M-Lok Rail, a low profile gas block and an A2 Flash hider. 

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.

Bolt: Full-auto profile bolt carrier group. Milspec Carpenter No. 158® steel bolt, Shot Peened, High pressure tested, Mag particle inspected, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 8620 steel M-16 profile carrier is chrome lined and phosphate coated.

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 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 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: 5165447586
SKU 5165447586
Department Uppers
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price N/A
Youtube Video No
Free Shipping? No
Free Shipping Qty Label N/A
Free Shipping Qty N/A
SKU: 5165447586

Questions and Answers

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Browse 2 questions Browse 2 questions and 1 answer
May this be swapped out for a 300blk instead of a 5.56?
D-rizzy on Apr 18, 2018
BEST ANSWER: PSA does not currently offer a 7" 300 Blackout upper. We do have 7.5" 300 Blackout uppers, which you could purchase separately with a Vortex SPARC in order to get a similar set up with that caliber.


5.0 / 5.0
18 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great Little Upper
Love the balance and the look of the upper.The sight is awesome.
July 1, 2019
3 months ago
A great product, project complete.
Excellent workmanship, runs flawlessly. Another great firearm from PSA.
Excellent workmanship, operates flawlessly. Another great product from PSA
Excellent workmanship, operates flawlessly. Another great product from PSA
May 10, 2019
5 months ago
Great purchase! Highly recommend to anyone looking to build an AR pistol.
September 22, 2018
1 year ago
A blast to shoot.
Easily my favorite to shoot. Get one.
August 3, 2018
1 year ago
Great upper for the price
I have had this upper to the range several times, and put roughly 400 rounds through it. So far there have been zero functional issues (loading, firing, and ejecting). At first I was worried that it might have some cycling problems since it has such a short barrel and gas system, but my worries quickly disappeared. I’m very pleased with my purchase.
User submitted image
Nice fireball from the short barrel
July 28, 2018
1 year ago
I am very satisfied with my purchase. It shipped quickly and the quality of the scope and the upper itself exceeded my expectations
User submitted image
Added Jun 22, 2018
June 22, 2018
1 year ago
Get one!
My favorite in the collection right now!!
June 4, 2018
1 year ago
Awesome piece. Great buy.
May 28, 2018
1 year ago
Shot and fun AR pistol.
Love this upper very much. Just got done putting 300 rounds through the completed rifle w/o any failures. Very very happy.
May 26, 2018
1 year ago
7" upper
The upper and the red dot worked flawlessly. I ran 500 rds through it the day it came in the mail.
Shoots like a dream.
Shoots like a dream.
May 25, 2018
1 year ago

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