PSA 8.5" CHF Pistol-length 300AAC Blackout 1/8 7" Lightweight M-Lok Upper With Charging Handle & Toolcraft NiB BCG

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PSA 8.5" CHF Pistol-length 300AAC Blackout 1/8 7" Lightweight M-Lok Upper With Charging Handle & Toolcraft NiB BCG

In stock

Regular Price: $ 699.99

Special Price $ 349.99

Quick Overview

free shipping Free Shipping applies to this item only and not the entire order.

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: 5165458340
UPC: 5165458340
MFR#: 5165458340

Barrel Length: 8.5"
Gas System: Pistol-Length
Barrel Profile: Heavy
Barrel Steel: Cold Hammer Forged Chrome Moly Vanadium
Barrel Finish: Phosphate
Chrome Lining: Yes, bore and chamber
Muzzle Thread: 5/8-24
Chamber: 300AAC Blackout
Twist Rate: 1:8
Barrel Extension: M4
Diameter at Gas Block: .750
Gas Block Type: .750 Low Profile 
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 7" Lightweight M-Lok Rail
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158, Nickel Boron
Bolt Carrier Profile: Full-Auto
Charging Handle Included: Yes

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Barrel: Barrel is made for Palmetto State Armory by FN Manufacturing using their proprietary blend of hammer forged chrome molly vanadium that is referred to as "Machine Gun Steel" by virtue of its use in FN's M249 and M240 weapons. The hammer forging process work hardens the steel, making it more durable. In addition, the chrome process for the bore allows for a lining almost twice as thick as a standard M16 for enhanced durability. Chambered in 300AAC Blackout, with a 1:8 twist, M4 barrel extension with extended feed ramps, and a pistol-length gas system. This barrel is Mil-spec phosphate coated, and MPI/HPT tested. The upper is finished off with a  .750" low profile gas block, Palmetto State Armory 7" Lightweight Free Float Rail, 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: ToolCraft nickel boron BCG has a bolt made of mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec.

Each upper is assembled to order with care, and test fired.


SKU: 5165458340
SKU 5165458340
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? Yes
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165458340

Questions and Answers

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Browse 6 questions Browse 6 questions and 7 answers
Will it fit ar15 lower?
Trevor S on May 16, 2019
BEST ANSWER: Yes, however if the lower was purchased as a rifle lower, you will have to SBR it and pay for the tax stamp.
Will this upper fit a Palmetto State Armory PSA-10 lower?
Guymudrat on May 16, 2019
will this operate with subsonic ammo and a suppressor?
Dave W on May 17, 2019
BEST ANSWER: That is what it is made for
I see no forge mark on the upper..
Do we know who forges these?
Mike M. on May 16, 2019
BEST ANSWER: a customer brought his into shop last week, the forge code was Brass Aluminum ( square). keep in mind palmetto now completely machines these raw blanks in-house.
Can I get with 1/7 twist ?
Gilbert C on May 17, 2019
BEST ANSWER: not in this short barreled configuration.
Will this fit my SB 5.56 lower and mags?
SHANNON B on May 17, 2019


5.0 / 5.0
1 Review
5 Stars
4 Stars
3 Stars
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1 Star
Great upper for a 300BK Pistol.
While mine wasn't offered with the BCG when I bought it.. the upper is the same.

Heck of a deal for a FN barreled ( marked ) CHF CL 300BK upper.

I'd buy it all over again.
Finished product...
Finished product...
May 18, 2019

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