10.5″ 300 Blackout FDE AR-15 Pistol Build Kit

(2 customer reviews)


Build Kits come unassembled

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

SKU KIT-15-300-10-002 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″ 300 Blackout Barrel (twist may vary)
  • 10″ FDE Handguard (depending on availability)
  • A2 Birdcage Muzzle Brake
  • Pistol Buffer Kit
  • Nitride BCG
  • Stripped Upper Receiver FDE Cerakote
  • Dust Cover
  • Steel Gas Block
  • Stainless Gas Tube
  • Standard Charging Handle
  • Complete Lower Parts Kit- FDE Grip

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.

Due to extreme order volume, the handguard may be either a mlok or keymod depending on availability.  You can still attach rail sections to mlok and keymod for your accessories

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

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

  1. Cortnet

    This kit is my 2nd purchase, the 1st was the 7.5” stubby build & that build assembled effortlessly! I’m certain the 300 will also go just as smooth in both the build & operation! Hats off to Team Durkin for their supply during the demand as well as the shipping time! I ordered this kit on a Sunday, and had the kit in my hands on Wednesday!! I’m stoked and can’t wait to send a bunch of rounds down range with this piece!! Looking forward to many more purchases in the future!! Thanks a lot!!

  2. tony

    This is my first rifle build from Durkin, so far so good, except I was missing the rod for the dust cover. only a slight inconvenience, and my other 9 builds have gone perfect, so still 5 stars lol

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