PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13.5" Lightweight M-Lok Upper With BCG, CH, & MBUS SIght Set - 516447488

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PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13.5" Lightweight M-Lok Upper With BCG, CH, & MBUS SIght Set - 516447488

In stock

Regular Price: $ 509.99

Special Price $ 369.99

Quick Overview

SKU: 516447488
UPC: 516447488
MFR#: 516447488
  • Barrel Length: 16"
  • Gas System: Mid-length 
  • Barrel Profile: A2
  • Barrel Steel: Chrome-Moly Vanadium
  • Barrel Finish: Melonite
  • 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
  • Hand guard Type: PSA 13.5" M-Lok Lightweight Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-Auto
  • Charging Handle included: Yes
  • Overall Length: 24.5"

Add To:

Barrel: 16" barrel length Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a mid-length gas system. The A2 profile barrel is finished with Melonite. Barrel is finished off with an .750" diameter low-profile gas block, PSA 13.5" Lightweight M-Lok Free Float Rail and an A2 flash hider.

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.

Includes:  Magpul® MBUS Sight Set, Black 

SKU: 516447488
SKU 516447488
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? No
SKU: 516447488

Questions and Answers

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Browse 3 questions Browse 3 questions and 11 answers
Is this barrel 4140 or 4150. Is the barrel melonite treated on the inside?
Michael M on Apr 19, 2018
Is the flash hider pinned and welded? Or just threaded on?
trevor m on May 17, 2018
BEST ANSWER: Just threaded. Generally the only time a flash suppressor is pinned and welded is if the barrel length is less than 16 inches. For example: pinning and welding a flash suppressor onto a 14.5 inch barrel to make it permanently 16 inches to meet NFA requirements.
Is there a lower accessory rail?
James W on Aug 12, 2018
BEST ANSWER: No, just the top rail. The 3, 6, and 9 o’clock postitions are Mlok, and there are plenty of those to mount just about everything you could.


4.8 / 5.0
24 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Aside from a little shipping snafu, where they sent me a .308 upper (oops), this has been a great purchase from start to finish.

Paired this with a PSA MOE EPT completed lower and have a great AR now.

With 55 grain 5.56 ammo it will do 2 to 3 inch groups at 100 yards. With Fiocchi 77 grain Sierra Match King (which they sell here) I can consistently hit
1.25 MOA at 100 yards, sometimes sub MOA.

WELL DONE Palmetto State Armory.
A little relief paint for my custom touch to the lower.
With OD green Magpul furniture.
July 25, 2018
6 months ago
would recommend to a friend. really nice gun
June 20, 2018
3 months ago
Took about a week and a half for shipping. Put about 800 rounds through it and it works just fine!
May 22, 2018
3 months ago
Great upper at a very low price. Very accurate to 300 yards so far.Fit and finish are perfect. Very light wieght.
May 21, 2018
3 months ago
Great barrel for the money!
Barrel looks great. No burs or rough spots. This barrel is incredibly light and the flip up sights are a great feature.
May 21, 2018
3 months ago
Great upper. Zero issues. Looks really great. Very "assaulty" haha. A bit heavy but for the price you cannot get any better consistent quality.
May 20, 2018
3 months ago
Great buy
Great quality. Exactly what I wanted. Shipped super fast
User submitted image
Added May 19, 2018
May 19, 2018
4 months ago
Nice upper at an affordable price
This is my first upper ordered through PSA and I am impressed! I bought the 300 BLK to shoot hogs and targets within 100 yards or so. Knowing it isn’t a precision upper my expectations were fairly low on accuracy. Surprisingly it shot about 2-3inch groups at 100 yards right out of the box. I’ve had zero failures so far with about 200 rounds through it. Functions flawlessly and you can’t ask for much more than that. Fit was also tight and well finished. Would definitely recommend for those looking for an affordable upper but not looking for 1 MOA accuracy.
May 18, 2018
4 months ago
Love this upper receiver exactly what I was looking for great product great quality
Love this upper receiver exactly what I was looking for great product great quality
Love this upper receiver exactly what I was looking for great product great quality
May 13, 2018
4 months ago
Get an AR10
It’s cool. Step your game up and get the AR10 like a big boy.
May 12, 2018
5 months ago

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