PSA 8.5" Pistol-Length 5.56 NATO 1:7 Nitride  6.5" M-Lok Upper With BCG, CH, & MBUS Sight Set - 516446691

More Views

PSA 8.5" Pistol-Length 5.56 NATO 1:7 Nitride 6.5" M-Lok Upper With BCG, CH, & MBUS Sight Set - 516446691


Quick Overview

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.

SKU: 516446691
UPC: 516446691
MFR#: 516446691
  • Barrel Length: 8.5"
  • Gas System: Pistol Length
  • Barrel Profile: A2 Style
  • Barrel Steel: 4150V 
  • 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 6.5" M-Lok Free Float Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-Auto
  • Charging Handle Included: Yes
  • Includes: Magpul MBUS Sight Set, Black
  • Overall Length: 17"

Add To:

Barrel: 8.5" Chambered in 5.56 NATO, with a 1:7 twist rate, M4 barrel extension, and a pistol length gas system. This barrel is nitride treated for accuracy and durablility. It is finished off with a PSA 6.5" M-Lok free-float rail, .750" diameter 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 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: 516446691
SKU 516446691
Brand Palmetto State Armory
Daily Deal N/A
Daily Deal Expires N/A
Youtube Video N/A
Free Shipping? N/A
SKU: 516446691

Questions and Answers

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 1 question Browse 1 question
When running this upper the hand guard becomes to hot to handle. Any suggestions or solutions?
James on Apr 17, 2018


4.5 / 5.0
2 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Pretty Good!
Not bad! I may replace the birdcage to something else because of gases in the face but hey it’s a short barreled AR lol.
Excuse the mess
Excuse the mess
June 21, 2018
9 months ago
Loud but Fun!
A very accurate upper that is a lot of fun to shoot. Excellent quality for the price and as usual meets the high standards one has come to expect from Palmetto State Armory. I have about 6 hundred rounds through it with zero issues. What amazes me is how accurate it is for such a short barrel. If your looking to do an SBR or an AR pistol you can't go wrong with this upper.
April 30, 2018

Customers Who Viewed This Item Also Viewed