PSA 10.5" Pistol-Length 300AAC 1/8 12" M-lok Slant MOE EPT Shockwave Pistol Kit - 5165447589

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PSA 10.5" Pistol-Length 300AAC 1/8 12" M-lok Slant MOE EPT Shockwave Pistol Kit - 5165447589


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: 5165447589
UPC: 5165447589
MFR#: 5165447589
  • Barrel Length: 10.5"
  • Barrel Profile: Heavy
  • Gas System: PIstol-length
  • Barrel Steel: 4150V Chrome Moly Vanadium
  • Barrel Finish: Phosphate
  • Chrome Lining: No
  • Muzzle Thread: 5/8-24
  • Chamber: 300AAC Blackout
  • Twist Rate: 1:8
  • Barrel Extension: M4
  • Diameter at Gas Block: .750
  • Gas Block Type: Low-profile
  • Muzzle Device: PSA Fluted Flash Can
  • Receiver Material: Forged 7075 T6
  • Receiver Type: M4
  • Hand guard Type: PSA 12" Slant End M-Lok Rail
  • Bolt Carrier Group Included: Yes
  • Bolt Steel: Carpenter 158
  • Bolt Carrier Profile: Full-auto
  • Charging Handle included: Yes
  • Overall Length: 21"
  • Build Kit: MOE Shockwave EPT Pistol Kit, Black

Add To:

Barrel: 10.5" 4150V Chrome Moly vanadium steel barrel, chambered in 300AAC Blackout with a 1 in 8" twist. Pistol length gas barrel is finished off with a PSA 12" Slant End M-lok Rail, a low profile gas block and a PSA Fluted Flash Can.

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring a mil-spec finish, these uppers are made for us right here in the USA by a mil-spec manufacturer.

Flash Can: Palmetto State Armory's Fluted "FLASH CAN". This is a solid 6061 aluminum device that is designed to direct muzzle gases and the muzzle flash forward. Threaded 5/8-24 for 300AAC. Black military-style hard anodizing. THIS DEVICE IS NOT DESIGNED TO REDUCE RECOIL, MUZZLE RISE, OR FLASH SIGNATURE. This device is designed to direct gasses and noise forward away from the shooter and enhance the weapon's appearance.

Bolt: Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside.

Build Kit: A high quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features our Enhanced Polished Trigger (EPT) fire control group which features finely polished contact surfaces and then finished off with a super slick nickel coating.  This results in a trigger which is significantly smoother than a standard Mil-Spec trigger assembly. Pistol kit also includes a Shockwave Blade pistol stabilizer, Shockwave tube, Magpul MOE grip, MOE trigger guard, carbine buffer spring, and standard carbine buffer.

SKU: 5165447589
SKU 5165447589
Brand Palmetto State Armory
Daily Deal N/A
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SKU: 5165447589

Questions and Answers

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Browse 3 questions Browse 3 questions and 5 answers
Has anyone had a problem with the rail sliding forward while firing?
Sean P on Jun 14, 2018
BEST ANSWER: Sean - Yes. This happened to both mine and my friends (separate orders). There is a piece of the rail that PSA has conspicuously left absent. Look forward of the magwell where you'll have two set screws that clamp the rail for a pressure fit. There is a void between the two sides of the rail where there should be a notched steel piece that fits a groove to prevent sliding. It's difficult to explain to PSA via Customer Service and so my buddy and I took the dimensions and fashioned our own. Best of luck and hope this helps!
Are those QD sockets on the side of the rail?
Mike L on Apr 17, 2018
BEST ANSWER: Yes, there are QD attachment points on both sides of the rail at the 3 o'clock and 9 o'clock positions.
Do you have this same kit in a 8.5" barrel?
Wes B on Apr 19, 2018


3.3 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Sadly disappointed, bad service.
I would not recommend this to anyone. The hand guard has a good chance of slides forward while firing because they do not make the tab to hold it on anymore. I sent it back for repairs and it came back with a new hand guard but had the same problem. When I called PSA about it the second time they said I can send it back again for repairs (no guarantee it would solve the problem) or buy a different hand guard or buy/make the tab that should have been there in the first place. Other than that headache, everything else works great and I had high hope for PSA but they let me down.
June 15, 2018
Great kit but that quad rail...
Everything came together nicely and it's a pretty gucci 300BLK pistol at the end of the day. BUT if you're like me and you want to suppress this thing one day, you're going to have to either find a really thin can or replace the rail with a shorter one that doesn't extend past the end of the barrel with the muzzle device removed.
May 21, 2018
3 months ago
I have been using PSA parts for years. Always great quality! Thanks PSA!
May 6, 2018
3 months ago

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