PSA 8.5" 5.56 NATO 1/7 Nitride 7" Slim M-Lok Upper - With BCG & CH - 5165447546

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PSA 8.5" 5.56 NATO 1/7 Nitride 7" Slim M-Lok Upper - With BCG & CH - 5165447546


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: 5165447546
UPC: 5165447546
MFR#: 5165447546

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 Style Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 7" M-Lok Free Float Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-Auto
Charging Handle Included: Yes
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 7" 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: Full-auto profile bolt carrier group. Milspec Carpenter No. 158® steel bolt, Shot Peened, High pressure tested, Mag particle inspected, Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec. 8620 steel M-16 profile carrier is chrome lined and phosphate coated.


SKU: 5165447546
SKU 5165447546
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
SKU: 5165447546

Questions and Answers

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Browse 5 questions Browse 5 questions
Is the head space checked on these units?
Fred O on Apr 16, 2018
can i have this in florida?
ghost on Apr 16, 2018
Is this a california compliant?
Joelannnie on Apr 28, 2018
Is this california compliant? Pls advise.ty
Joelannnie on Apr 28, 2018
Is this length legal in California?
Aaronrey513 on Apr 16, 2018


5.0 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Great assembly for any build
Very nice upper for a pistol/SBR build. The slim rail is especially nice as it provides a low profile and reduced weight.
May 22, 2018
4 weeks ago
Would definitely buy again
Great upper at a great price. Packaging is top notch.
May 19, 2018
1 month ago
Great PSA 556 pistol upper
Faster shipping than my initial PSA upper, nice finish, and straight lines. No blemishes. Thanks PSA
May 9, 2018
3 weeks ago

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