M-Lok Ar 15 rifle kit

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PSA 18" Rifle-Length 6.5 Grendel 1/8 Stainless Steel 15" Lightweight M-Lok MOE 2-Stage Precision Rifle Kit - 5165450280

In stock

Regular Price: $ 749.99

Special Price $ 449.99

Quick Overview

free shipping Free Shipping applies to this item only and not the entire order.

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: 5165450280
UPC: 5165450280
MFR#: 5165450139
  • Barrel Length: 18"
  • Gas System: Rifle-length
  • Barrel Profile: A2 Style
  • Barrel Steel: 416R
  • Barrel Finish: Stainless Steel
  • Chrome Lining: None
  • Muzzle Thread: 5/8-24
  • Chamber: 6.5 Grendel; Type 2
  • Twist Rate: 1:8
  • Barrel Extension: M4
  • Diameter at Gas Block: .750
  • Gas Block Type: Low profile adjustable gas block
  • Muzzle Device: A2 Flash Hider
  • Receiver Material: Forged 7075 T6
  • Receiver Type: M4
  • Handguard Type: PSA 15" Lightweight M-Lok Free Float Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: 9310, Nitride Coated
  • Bolt Carrier Profile: Full-auto
  • Charging Handle Included: Yes
  • Build Kit: PSA MOE 2-Stage Lower Build Kit, Black
  • Overall Length: 24.5"
  • Weight as Configured: 4.2lbs

Add To:

Barrel: 416R Stainless steel. Chambered in 6.5 Grendel, with a 1:8 twist, M4 barrel extension, and a rifle-length gas system. The barrel is finished off with a PSA 15" Lightweight M-Lok free float rail, .750 adjustable gas block, and A2 flash hider.

Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. These uppers are made for us right here in the USA by a mil-spec manufacturer.

Bolt: Full-auto profile bolt carrier group. 9310 steel bolt, Shot Peened, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 8620 steel M-16 profile carrier is nitride treated.

Build Kit: PSA MOE 2-Stage Lower Build Kit

SKU: 5165450280
SKU 5165450280
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: 5165450280

Questions and Answers

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Browse 9 questions Browse 9 questions and 13 answers
When will this come back in stock?
Brady H on Jan 4, 2019
What weight buffer does this come with?
MidlandSniper on May 6, 2019
The lower build kit says MOE 2 stage, does that refer to the trigger type?
clifford B on Feb 18, 2019
BEST ANSWER: I believe that's what they are referring to as opposed to a single stage trigger. So there is some take up in the trigger when pulled and then additional take up to compress another spring before hammer is released. My upper did come with a 2 stage trigger.
I would like to install a Magpul AR-15 MOE RIFLE STOCK FIXED RIFLE LENGTH on this gun. Do I need a different Buffer tube & spring? If so, what kind?
Wally on Jul 10, 2019

You will need the rifle length receiver extension, with the rifle length buffer and spring. You will not need the A2 spacer.

Best Regards,
(Name of employee removed)
Palmetto State Armory Customer Service
Is it available in a 20in barrel?
Tommy on Dec 15, 2018
does this kit have every thing I need to complete the build of this rifle?
MIKE on Dec 5, 2018
BEST ANSWER: An ar-15 lower and Magazine, of course you need ammo.
So what lower will I need for this build?
Jordan S on Dec 5, 2018
BEST ANSWER: When you shop AR-15 lowers, most of them will say multi caliber and work for this. Further, pretty much any AR-15 lower will work, the caliber specific ones just have a caliber engraved on them.
I would like this kit but with a 20" barrel is that available?
Craig E on Jul 14, 2019
I have been told that this rifle in the AR platform is accurate all the way out to 800 yards, is that true or is someone just lying to me ??
HUNTINGAZELK on Feb 19, 2019


4.7 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Beautiful rifle and super nice trigger. Very easily assembly
Very impressed with the speed of delivery. A sharp looking rifle that feels good in the hands. Nice accuracy and no feed issues. PSA is the way to go for a fair priced reliable gun.
July 10, 2019
2 months ago
Great kit at a great price! Easy to assemble and it functions flawlessly. Very happy with it. It’s my first PSA firearm but it won’t be my last!
Great kit at a great price! I’m using my Grendel for predator hunting and have been happy with it!
Great kit at a great price! I’m using my Grendel for predator hunting and have been happy with it!
June 30, 2019
2 months ago
Another home run by PSA
Bought 2 of these set up and built on 5D 80% Lowers. The guns both shoot sub MOA at 100 yards with my 123G SST hand loads. love this caliber.
June 10, 2019
3 months ago
Awesome upper!
Built my AR on an Anderson lower. After sight in, first 5 shots at 100 yards all touch each other. I have run 1500 rounds through this upper and still have very very tight groups. Very impressed with my AR. This is my second AR from PSA, I'm quite sure I'll order another. Excellent!
February 14, 2019
7 months ago
With the exception of minor inconvenience, still happy.
Pros: 1MOA @ 100 with Hornady Black 123 gr. ELD-X, 1/2 MOA @ 100 yards with Hornady Custom 123gr SST. Trigger is nice for what it is. Great shooter and looks great.
Con: Had feed issues first thing. Seemed way under gassed. Ran a couple of boxes of different ammo as I messed with the gas block getting ready for a hunt. Had to remove adj. block. Had trouble due to whoever installed gas block over torqueing set screw and couldn’t get it out with Allen wrench or removal tool. Once removed discovered that even though gas block was tight against barrel shoulder and aligned correctly, carbon deposit showed only getting 1/4 hole getting gas. Replaced temporarily with spare gas block and seems that with a H1 buffer I shouldn’t have any more issues. Would have returned it but wasn’t in the position at the time to wait for it.
February 12, 2019
7 months ago
Response from Palmetto State Armory
We do apologize for that. Please contact Customer Service so we may resolve this issue.
February 13, 2019
Casey S
No reason to not.
Satisfactory kit. Especially like the fact that I didn't need to upgrade the trigger.
Rotate your computer screen 90 degrees....
Rotate your computer screen 90 degrees....
February 8, 2019
7 months ago

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