PSA 8.5" CHF Pistol-Length 300AAC Blackout 1/8 7" Lightweight M-Lok MOE EPT SBA3 Pistol Kit w/NiB BCG

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PSA 8.5" CHF Pistol-Length 300AAC Blackout 1/8 7" Lightweight M-Lok MOE EPT SBA3 Pistol Kit w/NiB BCG


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.

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: 5165458288
UPC: 5165458288
MFR#: 5165458288
  • Barrel Length: 8"
  • 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, ToolCraft Nickel Boron
  • Bolt Steel: Carpenter 158, Nickel Boron
  • Bolt Carrier Profile: Full-Auto
  • Charging Handle Included: Yes
  • Build Kit: PSA MOE EPT SBA3 PIstol Kit

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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.

Build Kit: A high quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features Enhanced Polished Trigger (EPT), Magpul Grip, Magpul Trigger Guard, and black oxide coated hammer and trigger springs. Also includes SB Tactical SBA3 Adjustable Pistol Brace, castle nut, latch plate, carbine buffer spring, 5 positioning mil-spec buffer tube, and standard carbine buffer.

SKU: 5165458288
SKU 5165458288
Department Uppers
Brand Palmetto State Armory
Daily Deal No
Daily Deal Expires No
Unit Price N/A
Youtube Video No
Free Shipping? No
Free Shipping Qty Label No
Free Shipping Qty No
SKU: 5165458288

Questions and Answers

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Browse 2 questions Browse 2 questions
Is there a sufficient shoulder at the rear of the muzzle thread to properly align a suppressor?
Keith W on May 9, 2019
Is this 300 kit with the CHF barrel available with 1:7 Twist?
GCook on Jul 28, 2019


4.5 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Great kit. I appreciated the extra bits included for things that tend go flying across the room during assembly. Even the mil-spec trigger was just fine. This is a quality package, and clearly the good folks at PSA know what they're doing. After 500 rounds with a wide variety of mostly supersonic ammo, no hiccups, no loose parts, soft-shooting, and very good accuracy. If you're on the fence, guys - it's a no brainer - buy it.
November 13, 2019
3 weeks ago
Amazing Firearm for the Price
Paired with a Surefire X300U / Streamlight TLR8, a Holosun 503GU, and either a Geissele SSA-E or LaRue MBT-2S trigger shooting 115gr Underwood Controlled Chaos this has become my go to Self Defense carbine and has sidelined the tried and true 5.56 guns like my BCM 11.5” and 16” Daniel Defense. Seriously impressed with this rifle and the price! Absolutely loving the 300BO for defensive carbines and Home Defense / Truck gun applications.
User submitted image
User submitted image
July 20, 2019
5 months ago
Great, but....
Let me start by saying that the fit and finish on this is great and everything went together well. It shot well and had flawless function.
But the reason for the low rating it the handguard slid forward when firing on multiple occasions during the same range trip. Ended up having to tighten the living hell out of the screws to make it stop sliding forward. Psa needs to address this issue. And if they do then I would gladly update my review to 5 stars
User submitted image
Added Jul 12, 2019
July 12, 2019
5 months ago
I love the CHF products!
The PSA CHF kits are always excellent for me and this is no exception.
July 9, 2019
6 months ago