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AT3 AR-15 Bolt Carrier Group - Auto - Mil-Spec Phosphate Coating

AT3 AR-15 Bolt Carrier Group – Auto – Mil-Spec Phosphate Coating

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Lifetime WarrantyOn All AT3 Brand Products

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot Sights, Handguards, Iron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

Our contact info is available here. To expedite processing, please provide your order information and description of the defect.

Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

AT3 Tactical partnered with the best BCG manufacturer in the industry – Toolcraft Inc – to produce this Top-Tier Mil-Spec Bolt Carrier Group.

It features a mil-spec parkerized phosphate coating, chrome-lined M16-style auto carrier & gas key, MPI/HPT inspected bolt, properly staked grade 8 gas key screws, and a lifetime warranty.

The bolt carrier group is the workhorse of your rifle, and a quality BCG is critical to reliable rifle function. Get a bolt carrier group that is guaranteed to last a lifetime.

Made in the USA


  • Caliber: .223/5.56/.300 Blackout
  • Carrier Type: M16 Auto (Ideal for AR-15)
  • Carrier Material: 8620 Gun Steel – Chrome lined
  • Gas Key Material: 4130 Steel – chrome lined
  • Gas Key Screws: Grade 8
  • Bolt Material: HPT/MPI tested 9310 Steel. Shot-peened for added strength
  • Extractor Material: D2 Tool Steel
  • Cam Pin Material: 8620 Steel
  • Firing Pin Material: 416 Stainless Steel
  • Mil-Spec O-Ring and Gas Rings

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Customer Reviews

Based on 5 reviews
Bolt carrier

Bolt carrier looks good, but the real story will be how it function once its test fired and customer support of the product. Looking foward to getting this operational!

Great BCG

I put this in an Aero Precision 20" AR build and it works great. No problems so far.

smooth action

i purchased this bcg to replace my new stock bcg because it would stick closed after a dry fire test every time.
now keep in mind it is an exact duplicate of what i already had so i had no idea if this at3 bcg would rectify the
problem. rcvd it a day ahead of schedule which was awesome. cleaned and lubed and installed and tested and
it runs flawlessly. at3 and toolcraft will be getting more of my business . im from reno so bet on it.

Thank you for the feedback, Guy. We're proud of our BCGs and we're glad we could solve a problem for you.
Works great

Nice BCG for the money, no issues here

Bolt jams

Bolt gets jammed easily Multiple times with many different types of ammo and clips made of metal and plastic. Had to use a small hammer on the driver to retract bolt. Oiled it well before using it and it appeared to move easily but when ammo placed it jammed forward and would not push bullet into chamber fully.