PSA 7.5" Pistol-Length 5.56 1/7 Nitride 6" Lightweight M-Lok Classic Pistol Kit - 5165449997

More Views

PSA 7.5" Pistol-Length 5.56 1/7 Nitride 6" Lightweight M-Lok Classic Pistol Kit - 5165449997


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: 5165449997
UPC: 5165449997
MFR#: 5165449997
  • Barrel Length: 7.5"
  • 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 Flash Hider
  • Receiver Material: Forged 7075 T6
  • Receiver Type: M4
  • Hand guard 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"
  • Build Kit: Classic Pistol Lower Build 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 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.

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

SKU: 5165449997
SKU 5165449997
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165449997

Questions and Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 14 questions Browse 14 questions and 36 answers
Can this kit be shipped to cali?
Franco on Nov 8, 2018
BEST ANSWER: If you have to ask, the answer is No
I just assembled this kit and very happy. But has no castle nut. Is it not necessary?
Harrison F on Nov 15, 2018
BEST ANSWER: This buffer tube was designed not to use a castle nut. If you tried to use one on this tube it would seat the tube to far back in the receiver. If you are planning on using a brace with thuis tube a mid level thread locker is recommended. If you are not going to run a brace, there's no need for the thread locker, just get it tight.
Is the lower receiver included?
Elliot A on Nov 4, 2018
What do I need to finish the build?
Neil W on Nov 11, 2018
BEST ANSWER: Looks like a just stripped lower and maybe some sites or optic
does this include the bolt carrier group and charging handle?
vary a on Nov 3, 2018
BEST ANSWER: Yes, see the description about the bolt.
Does this require an ffl to buy this?
Neil W on Nov 10, 2018
BEST ANSWER: No FFL for uppers. The lowers are considered the gun by ATF and will need to be transfered by an FFL.
Is this handguard proprietary? Or can it be replaced with an aftermarket one?
Mel S on Nov 14, 2018
BEST ANSWER: You can replace it with whatever AR-15 compatible hand guard you choose.
What hand stop is compatible with this?
Eric C on Nov 13, 2018
BEST ANSWER: Any M-Lok hand stop as long as it is not too long in length should work.
Can a complete pistol kit M4 5.56 without the lower be shipped to California?
Franco on Nov 7, 2018
BEST ANSWER: Check with California laws. I believe it can be since you don’t have to have a FFL to have it shipped directly to you.
What’s the specs for tightening the buffer tube without a castle nut?
Kyle B on Feb 8, 2019
BEST ANSWER: I just hand tighten them. You can use some blue loctite. You don't have to. Just make sure it is always snug. It is never going to fall off and you are likely to change it out eventually.
Does the upper come assembled?
A Dizz on Nov 8, 2018
BEST ANSWER: Yes, the upper, bolt carrier group,barrel shroud & charging handle all assembled. The lower pieces, come in little bags separated for easy assembly/ identification.Whole shebang only needs a stripped lower to go.
Will this accept any sort of brace or blade?
Jamee C on Nov 5, 2018
BEST ANSWER: You can use, almost, any type of brace. If your wanting to use the Shockwave brace, they may want you to buy a new buffer tube, but its easy enough to dimple the tube that comes in this kit. If you can put together this kit, surely you can figure out what size bit and how deep to drill, to create a dimple in the right spot for you.
Can this kit be shipped to North Carolina without a FFL?
Ronnie W on Nov 14, 2018
BEST ANSWER: Yes. It is not a gun.
is the buffer tube mil spec or commercial size ?
charles f on Nov 27, 2018


4.7 / 5.0
65 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Upper receiver out of mil-spec
Upper receiver was out of mil-spec, causing massive gauges in my charger handle. Caused issues in multiple points on the weapon. Also had issue with trigger guard and rolling pin.
Since it was a clearance item no way to replace. Very disappointed.
March 9, 2019
Response from Palmetto State Armory
We do apologize for that. Since all of our parts and firearms are covered by our Lifetime Warranty, if you have any issues arise from the craftsmanship of the product, we can either have select parts sent to you for you to replace, or we can have the item brought in, at no cost to you, so we can repair or replace the defective product. Please contact Customer Service so we may resolve this issue.
March 11, 2019
Casey S
overall I would recommend it as a cheap upper if you don't need to change the handguard
Does the job. Handguard is really Slim and low profile hard to get any accessories on this handguard I will have to replace it to do what I want.
February 8, 2019
5 months ago
Great pistol, Great price
I highly recommend this pistol kit. I have built several PSA kits and have not had a single issue. Their shipping is fast and always packaged nice.I will continue to buy kits from PSA.
User submitted image
User submitted image
User submitted image
January 20, 2019
5 months ago
Great buy
Arrived in a timely manner. As always, PSA has good products at great prices. I am happy with this upper & build kit. Everything went together well and it runs well and looks good.
January 17, 2019
5 months ago
This is my 4th build, i love your product. Im really happy with price and quality of material
Clean build
User submitted image
January 16, 2019
5 months ago
Hell ya
I'd recommend getting the upper assembly with the brace you want. Saves cost.
User submitted image
Added Jan 14, 2019
January 14, 2019
5 months ago
For the $$$
This is the best deal out there for the money.
January 14, 2019
5 months ago
Week 8 was great and turned out to be a great gun
User submitted image
Added Jan 13, 2019
January 13, 2019
5 months ago
Love it going to get another one for my collection would recommend this product to anyone looking for a great pistol thanks psa
January 10, 2019
5 months ago
Everything you need right from Palmetto
Awesome gun kit...get your lower from Palmetto and you are good to go...added front and rear sights and a blade stock along with a Holsun sight and I was ready to go
January 8, 2019
5 months ago

Customers Who Viewed This Item Also Viewed