PSA 16" 5.56 NATO 1:7 Midlength Nitride 13.5" Lightweight M-Lok MOE EPT Rifle Kit w/ MBUS Sight Set

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PSA 16" 5.56 NATO 1:7 Midlength Nitride 13.5" Lightweight M-Lok MOE EPT Rifle Kit w/ MBUS Sight Set

In stock

Regular Price: $ 739.99

Special Price $ 419.99

Quick Overview

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SKU: 516446780
UPC: 516446780
MFR#: 516446780
  • Barrel Length: 16"
  • Gas System: Midlength 
  • Barrel Profile: A2
  • Barrel Steel: 4150 Chrome-Moly Vanadium
  • Barrel Finish: Nitride
  • Chrome Lining: None
  • 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
  • Handguard Type: PSA 13.5" Lightweight M-Lok Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-auto
  • Charging Handle Included: Yes
  • Optics: Magpul MBUS Front and Rear Flip-Up Sights, Black
  • Fire Control Group: PSA Enhanced Polished Trigger (EPT) FCG
  • Overall Length: 24.5"
  • Weight: 4.0 lbs
  • Barrel Marking: "5.56 NATO 1/7 FREEDOM"

Add To:

Barrel: 16" 4150V Chrome Moly Vanadium steel  Freedom barrel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a Mid-length gas system. The barrel is finished with with a .750" diameter low-profile gas block, PSA 13.5" Lightweight M-Lok Free Float Rail and an A2 flash hider. Roll mark on barrel reads "5.56 NATO 1/7 FREEDOM"

Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, these upper upper receivers are made for us right here in the USA.

Bolt Carrier Group: For AR15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158® steel. Gas key is secured with grade 8 fasteners and staked. Bolt carrier is parkerized outside and chrome lined inside. Includes Charging Handle.

Lower Build Kit:  PSA MOE EPT Lower Build Kit, Black

Includes: Magpul MBUS Sight Set, Black 

SKU: 516446780
SKU 516446780
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 516446780

Questions and Answers

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Browse 23 questions Browse 23 questions and 45 answers
Has the headspace been checked on this barrel and bolt or would I need to get that done if I bought one?
Michael T on Apr 12, 2018
BEST ANSWER: I contacted PSA customer support and they confirmed that these are headspaced and test-fired to ensure proper functioning. It's ready to go.
Are the bolts marked MPI or HPT?
fieldfly f on Apr 12, 2018
BEST ANSWER: these bolts have the Magnetic Particle (MPI) stamping.
Can this kit be shipped to ny without an ffl?
Shane M on Apr 28, 2018
Does this product ship to Ca??
Freddy on May 1, 2018
Is there a way to add a bottom rail to this upper?
Travis B on Apr 16, 2018
BEST ANSWER: Yes. M-lock's base go into the oval on the hand guard. They twist and lock as you tighten them.
I would like to know the difference between the standard mil-spec AR15 barrel and the Freedom barrel?
T E on Jul 4, 2018
What lower receiver do you recommend for this upper kit?
Jarod B on Apr 27, 2018
BEST ANSWER: Any AR-15 style stripped lower. PSA lowers have about the best price going, and I’ve built 5 using PSA lower build kits with zero problems.
does this kit come with all of the parts to assemble the lower?
shawn h on May 12, 2018
BEST ANSWER: Yes, this has everything you need to build a complete rifle, except for the stripped lower receiver. Link below.
I was just wondering, with this kit, is it everything i need to put it together, or do i need anything else, this is my first one, an dont want to get it wrong?
mustang8750 on Jul 14, 2018
BEST ANSWER: Everything in this kit is what you need to build/assemble a rifle on a stripped lower receiver. If you don't have a stripped lower, PSA sells them, or you can purchase from a supplier of your choosing. That will require the lower to be shipped to an FFL holder. These kits are good quality and easy to assemble. Check out some assembly videos on YouTube for instructions, tool choices, and if you even want to go down this road. Some optics would be needed as well. The pop up sights provided are more or less back-ups to some good optics. Good luck and keep the RPMs up on that 5.0
Is this a complete build or just the upper?
Nick M on May 14, 2018
BEST ANSWER: It is a complete build kit minus the lower receiver. The upper will come assembled.
Is the buffer tube Mil-spec or commercial?
Nathan on Apr 29, 2018
BEST ANSWER: Mil-Spec diameter buffer tube.
Has anyone had any problems with certain Ammo running through this upper?
Matt S on May 11, 2018
BEST ANSWER: No problems so far. Got about 500 rounds through it shooting federal, winchester, hornady and even tula and aside from a few dud rounds of tula everything worked perfectly.
Is it possible to get a lefty version of this?
Jay Wells on Apr 27, 2018
BEST ANSWER: I'm a lefty and used M16s in the infantry. Once you use them a bit it seems like they are more suited to lefties than righties if you change to an ambi safety! Bolt release with trigger finger, mag release with thumb of non firing hand when changing mags. Can't use a left handed AR now. Feels backwards!
Can you use .223 ammo with this rifle or just 5.56?
bcowboi on Aug 4, 2018
BEST ANSWER: Either one it is multi caliber
Is the barrel mil-spec?
rval093 on May 9, 2018
BEST ANSWER: Yes it is! I’m very well satisfied with this rifle kit.
It it hbar or does it have a pencil barrel?
Wyatt B on Jul 27, 2018
BEST ANSWER: I'm not into the tech stuff but it's a heavy barrel in front of the gas block and thinner behind.
Is this a quality stock...will it rip my beard hairs out?!
Joshua S on Jul 28, 2018
What charging handle is in this upper?
Ryan H on Jul 24, 2018
What is the inside diameter of the M-lok Rail handguard?
strangern on Jun 30, 2018
Can this be shipped to California?
Carlos V on Jun 5, 2018
Did anyone else receive a Freedom barrel? Its not mentioned as such in the description.
Thomas S on May 31, 2018
BEST ANSWER: yes I did
When will this kit be available again?
Joe P on May 20, 2018


4.9 / 5.0
113 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great build! I haven’t been able to shoot it yet but shipping was quick and everything came nicely packaged!
August 14, 2018
1 month ago
Exactly what I expected and works like a charm. The upper is pre-assembled and comes with the Freedom barrel for any who weren’t aware. I bought an Anderson stripped lower and everything fit just fine once I got it assembled. Looks cool and shoots straight. 10/10.

If you’re new to building, consider a set of roll pin punches. I learned a good way to increase the challenge is trying to assemble the lower with a screwdriver and hammer.
User submitted image
Added Aug 11, 2018
August 11, 2018
1 month ago
This rifle is just another great addition. Way to go PSA.
August 10, 2018
1 month ago
Great Kit
This is my sixth build using PSA parts. This rifle performed flawlessly. Shoots great throws the brass in a neat little pile. I have never had a single issue with any PSA parts. Buy one you will not be disappointed.
August 10, 2018
1 month ago
Great quality at the lowest price
This is my first AR build and I couldn’t be happier. I married this to a Bushmaster lower with the PSA lower parts kit and a Holosun red dot. After looking around for a month I really don’t think I could have found this much quality for this price anywhere else. I’m already trying to decide on the parts to my next build.
August 9, 2018
1 month ago
Love it
Recently purchased these parts, put them all together. Took it out without a hitch. Shot well and only took me 3 adjustments to dial in the sights. I would purchase another kit
August 8, 2018
1 month ago
Quality product and wrll priced.
August 8, 2018
1 month ago
Loved it. No complaints.
August 8, 2018
1 month ago
Impressive for price.
While I have not shot this gun yet, it is impressive looking so far and very light weight. I like the look so far, will no more once I hit the range.
August 3, 2018
1 month ago
Great running assembly will be buying more from psa
Great qulity. Carefully packaged for shiping.
User submitted image
User submitted image
User submitted image
August 3, 2018
1 month ago

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