10.5″ 300 Blackout Grab Bag Upper



Complete your upper

Add a bolt carrier group and charging handle to complete your upper.


Charging Handle Options

Gas blocking charging handle

Customize your upper

Select Rail Type

Muzzle Device Options

Gas Block


Custom Dust Cover Engraving

Foregrip Options

Optic Options

Light Options

Folding Adapter

Lower Parts ?

Ar15 Standard Lower Parts Kit LPK $49.99
Velocity 3lb Enhanced AR-15 Lower Parts Kit LPK $199.00
Ar15 Mil Spec Carbine Buffer Tube Kit $39.99

Tools / Extras

Product price: $198.99
Order total:

Free shipping on all orders over $500

300 Blackout Ar-15 Pistol length ‘Grab Bag’ upper. Sometimes we receive some cosmetically blemished parts, or a customer might back out on an order, or we may have leftover gun-show inventory. This is an assembled upper (option to add BCG / Charging Handle) that will come with a free float handguard style of your choice! Picatinny Quad Rail or Slim M-Lok! Lengths and rail type may vary. The receiver itself might be forged or billet, and may or may not have dust cover / forward assist features. The upper/barrel will be functional (shootable), but may just have some cosmetic blemishes, or something small like the dust cover opens if you look at it wrong. Quad rails may fit tight on certain attachments like Magpul. If you aren’t picky and just want a working upper at an advantageous price, this deal might be for you.


We assemble everything in-house, completely customized to your order. Our engineers have many years of experience in the industry, making sure that everything that goes out the door is built to the highest standard possible.

Prior to shipping, we test fire and follow a strict quality control protocol, paying extra attention to the gas system and headspace, ensuring that your AR-15 will function properly and will reliably fire in all cases. 


Over the past 10 years, we have carefully refined the parts we use for our AR-15 uppers. We only use high-quality components in our builds that have been sourced from proven manufacturers and OEMs.

We have built tens of thousands of AR-15s and ensure reliability, durability, and accuracy in all of our products.


We stand behind our products and have a limited lifetime warranty on the uppers that we sell.  Our warranty protects against defects in product, material, or workmanship.

If there is an issue, simply contact us, and we will handle it. We will repair/replace items if necessary. 

Additional information

Weight 4 lbs

300 BLK

Barrel Size