AM-15 Kit – Upper Build, 10.5″ .300BL( pistol Gas)

Rated 3.40 out of 5 based on 5 customer ratings
(5 customer reviews)


Kit- Upper Build, 10.5″ .300BLK Includes:

  • .300blk 10.5″ Barrel – Pistol Length
  • AM-15 Stripped Upper Receiver
  • AM-15 Gas Block, Low Profile Steel – .750
  • AM-15 Gas Tube – Pistol length

In stock

UPC: 640901514925 SKU: G2-K610-BA01 Category: Tags: , , ,


The Upper Build, 10.5″ .300blk Kit is a great upper starter kit for your build! Add your own upper parts kit, charging handle, BCG, forearm, and flash hider to finish this upper build. This Kit Includes the Following: .300blk 10.5″ Barrel – Pistol Length, AM-15 Stripped Upper Receiver, AM-15 Gas Block, Low Profile – .750, and an AM-15 Gas Tube – Pistol Length.

The 10.5″ .300 Blackout Heavy barrel is the perfect barrel to start your next build and add to your AM-15 collection. This barrel is made from 4150 Chrome Moly Vanadium Steel with a parkerized finish. Featuring a Pistol length gas system with a .750″ gas port and a 1:8 twist, this barrel provides top accuracy and precision for your .300 Blackout build.

The AM-15 Stripped Upper Receiver is machined from 7075 T6 Aluminum forging. Featuring M4 feed ramps, this upper receiver is machined to Military Specifications & Standards and can be used with multiple calibers on the AR-15 platform. This upper receiver comes in type III hard coat black anodize. Match this Upper with one of our Lower Receivers for a solid fit for your AM-15 build.

The AM-15 Low Profile Gas Block Assembly is intended to fit underneath free floats. This Gas Block is made from 12L14 Steel and is compatible with a .750 dia Barrel. Nitrite finish with laser engraved with the Anderson Manufacturing Logo on one side. Roll Pin and Set Screws are included with this gas block.


Additional information

Weight 4 lbs
Dimensions 32 × 3 × 3 in

5 reviews for AM-15 Kit – Upper Build, 10.5″ .300BL( pistol Gas)

  1. Rated 3 out of 5


    I had problems with cycling on my completed build, after some research i switched to a pistol length gas tube barrel and it solved everything. This would be a fine kit if you want a single shot but i would def recommend the pistol length barrel.

  2. Rated 1 out of 5


    Same issue with my build . I only bought the barrel and same issue. I even used an adjustable gas block. If anyone at Anderson has a fix please let me know , I would hate to have a $100 paper weight .

  3. Rated 5 out of 5


    10.5 is best with pistol system.
    For your build (10.5 w/ carbine gas) you will need a heavier buffer and an adjustable gas block for it to cycle.
    Good Luck

  4. Rated 4 out of 5

    JD Meyers

    I apologize, long story even longer… But using the correct ammo is vitally important as well. I only tested 110gr vMax Reman ammo from Freedom Munitions. Subsonic ammo 147-200gr will decrease gas pressure even more but using a suppressor should negate short stroking issues. If that occurs I will likely have run a low mass NiB or Nitride BCG.

    • Michael Johnson

      Yes the 300 blackout is hard to get to work depending how you are shooting it.
      We have seen a pistol gas system works best with both kids of ammo.
      This is sub and supersonic.

  5. Rated 4 out of 5

    Terence Robinson

    Glad I bought this combo pkg. The only thing i would change is the gas tube. Instead of offering the carbine tube, when Anderson is well aware that the 10.5″ works best with the pistol length gas tube, Anderson needs to change the tube and include the pistol length gas tube.

    Other than that, I am very pleased with my purchase. Wish we could add pics to show off our custom works. Mine has:

    Purple rails
    Purple ra-ails
    Everybody here
    Come on and raise your hands…

    • Michael Johnson

      We will make the change

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