PSA 7.5" 5.56 NATO 1/7 Phosphate 7" M-Lok MOE SOB Pistol Kit - 5165447921

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PSA 7.5" 5.56 NATO 1/7 Phosphate 7" M-Lok MOE SOB Pistol Kit - 5165447921


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: 5165447921
UPC: 5165447921
MFR#: 5165447921
  • Barrel Length: 7.5"
  • Barrel Profile: Pistol
  • Gas System: Pistol-length
  • Barrel Steel: 4150V Chrome Moly Vanadium
  • Barrel Finish: Phophate
  • 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 Flash Hider
  • Receiver Material: Forged 7075 T6
  • Receiver Type: M4
  • Hand guard Type: PSA 7" M-Lok 
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-auto
  • Charging Handle included: Yes
  • Overall Length: 18"
  • Build Kit: MOE SOB Pistol Kit, Black

Add To:

Barrel:  7.5" 4150V Chrome Moly vanadium steel barrel chambered in 5.56 NATO with a 1 in 7" twist. Pistol-length gas barrel is finished off with an anodized PSA 7" 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.

Pistol Build Kit:  A high quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features polished hammer and trigger contact points, and black oxide coated hammer and trigger springs. Also includes SB Tactical SOB Pistol Brace, double-looped pistol latch plate, carbine buffer spring, and standard carbine buffer.

SKU: 5165447921
SKU 5165447921
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? No
SKU: 5165447921

Questions and Answers

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Browse 3 questions Browse 3 questions and 3 answers
Can I get this kit with the SBA3 adjustable brace instead?
Jeff F on Apr 19, 2018
BEST ANSWER: NO for VA arm brace can not be adjustable, as well as no grip can be added to the rail. per local gun shop owner here in VA
does this 5,56 also take .223 rounds?
peter d on Apr 21, 2018
BEST ANSWER: 5.56 takes both
Do this kits come in Gas Pistons or only gas impingement?
Oscar Ramirez R on May 12, 2018
BEST ANSWER: All PSA AR-15 uppers and kits are Direct Gas Impingement. There are Piston conversion kits available, which will work on PSA uppers without issues.


4.8 / 5.0
25 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
The fit and finish is overall great. action is smooth and precise. Took it out to the indoor range and was only able to fire 1 magazine! concussion and muzzle blast was amazing! I will be getting a linear compensator to mitigate the concussion and unburnt powder flying everywhere. Only reason why not 5 stars is kit came without castle nut. I had to buy one locally.
User submitted image
Added May 29, 2018
May 30, 2018
2 months ago
I consider myself a pretty good shooter. This thing will ring some steel a ways out, very surprising how well it shoots.
May 28, 2018
2 months ago
AR Pistol
Received the AR pistol kit and assembled on my lower. Had multiple jams. Called PSA and they sent a call tag and repaired the problem. Still had an issue with the bolt not closing completely. Polished the extractor and worked flawless.
May 24, 2018
2 months ago
Great Kit! I recommend it!
May 23, 2018
2 months ago
Amazing. Must have. Reliable.
User submitted image
Added May 21, 2018
May 21, 2018
2 months ago
These kits are great quality and PSA are great people to deal with. I was missing the trigger in this kit and they had it to me in a couple days.
Great quality parts at a great price. I definitely recommend these kits.
May 21, 2018
3 months ago
Great value for a savvy enthusiast
Overall I'm very happy with this kit. The trigger has a nice break and the moe grip is a nice add on. Most everything went together well. The buffer tube was just slightly too long to seat properly. I had to remove a small amount to get it to tighten all the way (that may have been the lowers fault, but it is mil spec).
May 19, 2018
2 months ago
Great upper and parts kit.
Good quality good value. The thing runs great. About 150 rounds amd not one problem. I would strongly recommend this upper.
User submitted image
User submitted image
May 17, 2018
3 months ago
Great build kit. Quality parts.
May 15, 2018
3 months ago
Great kit
Great kit, went together easily, looks good and functions perfectly
May 15, 2018
3 months ago

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