PSA 10.5" CHF Pistol-Length 300AAC Blackout 1/8 9" Lightweight M-Lok Upper - With Nickel Boron BCG & CH - 5165448092

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PSA 10.5" CHF Pistol-Length 300AAC Blackout 1/8 9" Lightweight M-Lok Upper - With Nickel Boron BCG & CH - 5165448092

In stock

Regular Price: $ 729.99

Special Price $ 499.99

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: 5165448092
UPC: 5165448092
MFR#: 5165448092
  • Barrel Length: 10.5"
  • Gas System: Pistol-Length
  • Barrel Profile: Heavy
  • Barrel Steel: Hammer-Forged Chrome Moly Vanadium ("Machine Gun Steel")
  • Chrome Lining: Yes
  • Muzzle Thread: 5/8x24
  • Chamber: 300AAC Blackout
  • Twist Rate: 1 in 8"
  • 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 9" M-Lok Lightweight Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: 9310, Nickel Boron
  • Bolt Carrier Profile: Full-Auto
  • Charging Handle included: Yes 

Add To:

Barrel: A proprietary blend of Hammer forged chrome molly vanadium made by FN that is referred to as "Machine Gun Steel" by virtue of its required 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, with a 1/8 twist, M4 barrel extension, and a pistol-length gas system. This 10.5" heavy profile barrel is Mil-spec phosphate coated, High Pressure tested and Magnetic Particle inspected. The barrel is finished off with a 9" PSA 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 T-marks, these upper receivers are made for us right here in the USA.

 Bolt Carrier Group: 5.56mm Bolt Carrier Group is Nickel Boron coated and features a 9310 bolt.  The gas key is hardened and secured with Grade 8 fasteners, and is staked per Mil-Spec. 

Each upper is assembled to order with US-made parts, and test fired to check gas function. 

SKU: 5165448092
SKU 5165448092
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Youtube Video No
Free Shipping? No
SKU: 5165448092

Questions and Answers

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Browse 3 questions Browse 3 questions and 1 answer
What is the inside diameter of the hand guard?
Johnk on Apr 19, 2018
Does this upper fit PSA-AR15 complete classic lower 7244?
Freddy on Apr 17, 2018
BEST ANSWER: Yes, it will.
can the a2 flash hider be removed to place a linear compensator instead?
jonathan on Apr 23, 2018

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