complete ar 15 rifle with m4 barrel extension

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PSA 7.5" Pistol-Length 300AAC 1/8 Nitride 6" Lightweight M-Lok MOE EPT SBA3 Pistol - 5165449859

In stock

Regular Price: $ 719.99

Special Price $ 549.99

Quick Overview

Must be 21 or older to purchase.

If you live in California, please read this notice before ordering.

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: 5165449859
UPC: 5165449859
MFR#: 5165449859

Gas System: Pistol Length
Barrel Profile: Heavy
Barrel Steel: 4150V Chrome Moly Steel
Barrel Finish: Nitride
Chrome Lining: None
Muzzle Thread: 5/8-24
Chamber: 300AAC Blackout
Twist Rate: 1 in 8"
Barrel Extension: M4
Diameter at Gas Block: .750"
Gas Block Type: Low-profile
Muzzle Device: A2 Style Flash Hider
Receiver Material: Forged 7075 T6 Aluminum
Receiver Type: A3
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
Lower Receiver: Forged 7075 T6 Aluminum
Receiver Finish: Hardcoat Anodized Black
Fire Control Group: Single-Stage, Enhanced Polished Trigger
Grip: Magpul MOE Grip, Black
Buffer Tube: 7075 T6 Aluminum 
Adjustment: Fixed
Pistol Brace: SB Tactical SBA3 Adjustable Pistol Brace, Black
Magazine: 30 Round Aluminum

Add To:

Barrel: 4150V chrome moly steel. Chambered in 300AA Blackout, with a 1:8 twist rate, M4 barrel extension, pistol-length gas system, and nitride treated for accuracy and durability.  This heavy profile barrel is finished off with a PSA 6" Lightweight  M-Lok free-float rail, .750" low-profile gas block, and an A2 flash style flash hider. 

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized.  These uppers are made for us right here in the USA!

Bolt: Full-auto profile bolt carrier group. Shot-peened, mil-spec Carpenter No. 158® steel bolt. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 

Lower: These forged lowers are quality made using 7075-T6 aluminum and are marked "MULTI" for caliber. Finish is hardcoat anodized. Pistol 7075-T6 buffer tube is hardcoat anodized and is fitted with an SB Tactical SBA3 Adjustable Pistol Brace, Magpul Grip, and Enhanced Polished Trigger (EPT). 

**FFL Required

SKU: 5165449859
SKU 5165449859
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165449859

Questions and Answers

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Browse 18 questions Browse 18 questions and 18 answers
What is the total length of this weapon?
Cmv35 on Oct 22, 2018
BEST ANSWER: It's about 23.3 inches with the brace collapsed, and 25.8 with it fully extended.
With the LAW folding stock adapter folded what is the overall length? that is a sweet setup Mr. Clay D!
Al A on Feb 11, 2019
BEST ANSWER: 17.75" with the LAW adapter folded, 24.75" extended to shortest SBA3 position.
Will the action cycle if used with a suppressor and sub-sonic ammo?
Time T on Nov 12, 2018
BEST ANSWER: Yes, thanks to the pistol length gas tube.
Is this semi auto?
Lgjjjjjjj on Nov 5, 2018
BEST ANSWER: Fully Semi-auto
Danny A on Oct 25, 2018
How does this AR compare to the name brand budget ars?
Jones on Oct 20, 2018
BEST ANSWER: Great! I have a Palmetto AR an a Smith&Wesson AR and they them same to me. I actually have 3 from palmetto
With the short barrel, can I only use sub sonic ammo?
steven s on Nov 4, 2018
BEST ANSWER: You can use both sub and supersonic ammo with the 7.5" barrel.
Does the bolt lock back on empty?
Ivan A on Feb 20, 2019
Is there a Hogue grip specific to this model?
Rob K on May 20, 2019
BEST ANSWER: An AR grips will work. Its an AR15 lower with a 300blk barrel
Will this allow you to swap out the current trigger for Franklin binary trigger?
M H on Mar 25, 2019
BEST ANSWER: It should be able to. Its basically an AR15 platform with a different barrel for the 300AAC cartridge.
Does this also fire .223?
Allan V on Jan 28, 2019
BEST ANSWER: All you would have to do is get a 223 or 556 barrel assembly, pop two pins, remove the 300 AAC barrel assembly and drop on the 223 (or preferably 556) and your good to go. The same magazines will work, but make sure you don't run 300 AAC in your 223/556 barrel or vice versa.
Can I put a 7” m lok hand guard on this instead of what it comes with? Are they all interchangeable?
James on Apr 12, 2019
BEST ANSWER: You can take the hand guard off and put whatever you wish on. Each brand of guard (and even model line) is likely going to be a bit different, so 'no', I wouldn't say interchangeable.
what is the velocity difference between a 9 inch barrel and 7.5 inch barrel?
Brian J on Feb 17, 2019
BEST ANSWER: You can expect to loose about 100 to 150 using the short barrel, but that is dependent on ammunition - some loads not so much.
Can you take off the muzzle brake and install Sandman L Suppressor and their muzzle brake? if so what is the thread size?
joel f on Jan 21, 2019
BEST ANSWER: The muzzle thread pattern is 5/8-24. Yes, the standard flash hider is removable and there should be sufficient clearance to install whatever muzzle device/suppressor you like.
Do you need a nfa stamp for this?
Vrodtrooper on Nov 19, 2018
Danny A on Mar 29, 2019
What is the weight of the pistol?
Joseph S on Feb 4, 2019
What is the weight for the buffer spring?
Clay D on Nov 11, 2018


4.9 / 5.0
8 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great subsonic capable weapon
It shoots great right out of the box, no upgrades really required (at least not at first...).
May 20, 2019
8 months ago
Great gun!
Had this gun for a few months now and love it. One word of caution is you may have trouble finding mags that feed well. I have not had good luck with Pmags and other plastic . So far the best have been surplus metal magazines, with those I have had zero failures.
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Added Apr 13, 2019
April 13, 2019
3 months ago
Psa is the best
Very surprised with the overall quality of the rifle I’ve wanted one for several years and this is hard to beat I also bought my 43x from psa as well great business great quality you can’t go wrong
March 14, 2019
4 months ago
Just have to order two!
I purchased this as a gift for my wife. This pistol is so much fun to shoot I need to order a second one!
I purchased this as a gift, but this pistol is so much fun to shoot I cant wait to order another.
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March 6, 2019
Very happy
Shipped very quickly. Looks great, shoots great. Trigger is a bit stiff. Will probably replace it. Already added a Law Tactical folding stock and Yankee Hill Resonator suppressor.
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March 2, 2019
4 months ago
I love it
I love it this Pistol
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Added Feb 16, 2019
February 17, 2019
5 months ago
This is a fantastic weapon at an even better price! It’s fun, accurate, and ,with the installation of my Law Tactical Folding Stock Adapter, it’s very concealable. It fits perfectly in a medium sized backpack.
I’ve installed a holographic sight and MBUS. I can cut a ragged hole at 50 yards and keep all my shots with 5” at 100 yards. I’ve run several types of ammo through it, sub-sonic and supersonic, factory loads and reloads. Never had a fail to feed or fail to fire.
Shouldering the arm brace is (almost) comfortable.
In all, this is a very well-built, reliable, and great looking weapon. It’s very versatile and doesn’t drain the wallet.
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December 8, 2018
7 months ago
Good unit for the price, solid.
November 22, 2018
8 months ago

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