TacFire 5.56 NATO AR-15 Upper Receiver Build Kit with Bolt Carrier Group - 7.5"

Manufactured by TacFire Inc.
SKU: UK-556-7-BCG
MPN: UK-556-7-BCG
Manufactured by TacFire Inc.
(0) No Reviews yet

In Stock

Standard orders will ship out 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. Click here for details



This TacFire 5.56 NATO AR-15 Upper Receiver Kit comes with everything you need except to start to assemble an 7.5” pistol. Whether this is your first build and don’t know where to start or your tenth and you just want something that is quick and easy to build without picking every single part, this kit is for you. The 7.5” barrel chambered in 5.56 NATO and every part included is built to last, making your new AR great for the range. The forged barrel is threaded 1/2x28 for attaching the included A2 flash hider. The barrel and pistol length gas system and gas block are covered by the Slim Line M-LOK handguard. This free float handguard is machined from aluminum and offers plenty of QD slots for attaching rail segments or other accessories. Check out the TacFire 5.56 NATO AR-15 Upper Receiver Kit for a one stop shop experience with everything you need to build an AR-15 pistol for the range.

Kit Includes:

  • 7.5" Barrel Parkerized (USA Made)
  • 5.56 NATO Bolt Carrier Group (USA Made)
  • Slim M-Lok Free Float Hand Guard
  • Low Profile Gas Block
  • Pistol Length Gas Tube
  • Mil-Spec Charging Handle Aluminum
  • Dust Cover
  • Forward Assist
  • 1/2"x28 Thread Bird Cage A2 flash hider
  • Upper Receiver (USA Made)

The TacFire build kit uses all Mil-Spec components, so you can easily upgrade parts in the future if you so choose. TacFire build kits are extremely easy and fun to build. They come with all the Mil-Spec components you need with the added benefit of a free float handguard instead of a plastic two-piece handguard. 
See More


Barrel Coating
Barrel Length7.5
Bolt Carrier Group
Caliber Gauge5.56 NATO
HP Tested
MPI Tested
Muzzle DeviceA2 Flash Hider

Ratings & Reviews

No reviews available

Be the first to Write a Review