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.

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
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
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
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Absolutely love it
Absolutely love it!!!!!!!!
May 19, 2018
1 month ago
Very impressed with the accuracy, and I wasn't sure how cool the hand guard would stay during sustained shooting, but equally impressed my bare hand was comfortable through more than a few hundred rounds.
May 18, 2018
1 month ago
Extremely happy with deal, vortex red dot is exceptional. Can’t wait to finish my build. Delivery time was super fast.
May 14, 2018
1 month ago
Great little upper!
Very happy with another product from PSA!
Great fun at the range, and awesome performance I can count on!
May 6, 2018
1 month ago
Exceeded expectations
With the price I told myself a 4 inch grouping at 50 yards would be acceptable. With standard federal ammo it did it with ease, average grouping at 50 yards was about 2moa. Again, I was not using match grade ammo. I put in a F1 bcg and boy it ran like a dream. 300 plus rounds without a single hiccup so far.
April 28, 2018
Best value for quality products!
Best value I could find! If you notice, PSA usually sells this upper without the SPARC for $299. Offering the upper with a $200+ optic, for only $50 more, is unheard of. Thank you PSA! I will post a full review after range testing. I have always been happy with PSA components. Order one; you won't be sorry...
April 20, 2018
1 month ago

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