10.5″ 300 Blackout AR-15 Pistol Build Kit

(5 customer reviews)


Shooting steel case ammunition through our products voids ALL warranties!!!

SKU KIT-15-300-10-001 Categories ,


Disclosure: Handguards will be either keymod or mlok depending on availability. This build kit will come with everything EXCEPT the stripped lower receiver to build a 10.5″ AR-15.

This kit includes:

  • 10.5″ 300 Blackout Barrel (black nitride or stainless steel, twist may vary)
  • 10″ Handguard (depending on availability)
  • A2 Flash Hider
  • Pistol Buffer Kit
  • 300 Blackout Full Auto Nitride BCG
  • Either Stripped or Upgraded Billet Upper Receiver (depending on availability) 
  • Forward Assist (where applicable)
  • Dust Cover
  • Steel Gas Block
  • Stainless Gas Tube
  • Standard Charging Handle
  • Complete Lower Parts Kit

All Build Kits Come Unassembled.

KIT notice as of March 1st 2020:

All build kits are subject to change slightly in this time of EXTREME demand. We are not currently able to fill specific spec requests. The kit parts will fall into the general specs above but items such as stocks, handguards, and muzzle devices are changing daily.

Shooting steel case ammunition through our products voids ALL warranties!!!

Additional information

Weight 4.5 lbs

5 reviews for 10.5″ 300 Blackout AR-15 Pistol Build Kit

  1. Caleb

    Solid kit. Very nice fit to an Anderson lower. Was surprised and impressed with how nice it is for the price!

  2. kevin.holcomb

    Same here standard Anderson lower. Kit went together great. Runs awesome and have purchased 3 other kits since.

  3. David S.

    I love this gun. One of many that I have purchased. I installed an adjustable gas block, and it shoots so nice.

  4. Chris

    Great kit, went together well. I was really impressed with the quality I received on this on.

  5. Jack Chambers

    quality parts. This is my first AR build from scratch.
    everything fit great. Installed it in an Andersons lower.
    went together smoothly and tight.
    didn’t have to force any parts.
    looking forward to building more kits from Durkin Tactical.

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