AT3 Tactical BCG Kit - Black Nitride - 5.56/.300 BLK - w/ Breek Sledgehammer Charging Handle
or 4 interest-free payments of $38.00 with
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Backed by 2 brand warranties what it covers
Product description
Black Nitride BCG Paired with a Breek Arms Sledgehammer Gas-Busting Charging Handle
Features
- AT3 5.56 NATO/.300 Blackout bolt carrier group with a black nitride finish that reduces friction and adds surface hardness
- Breek Arms Sledgehammer gas-busting charging handle machined from 7075-T6 aluminum with serrated latches
- Raised rear shelf, keyway cut, and internal baffling divert gas away from your face
This kit combines the AT3 black nitride BCG and Breek Sledgehammer charging handle. It covers the bolt carrier group and charging handle of an AR-15 upper in one go.
Note: Components ship as separate parts and are not installed.
Warranty Note: Curated by AT3 Tactical. Components in this kit are covered by each manufacturer’s own warranty — AT3’s warranty does not extend to or replace the warranties of the individual parts included. Warranty terms for some component brands may not yet be listed in the warranty tab; contact the manufacturer directly for in-depth and up to date coverage details.
Specifications
- Brand: Multiple – AT3 Tactical, Breek Arms
- Model: AT3 Tactical BCG Kit – Black Nitride – 5.56/.300 BLK – w/ Breek Sledgehammer CH
- MPN: BCG-M16-BN-BRK6015-KIT
- Platform: AR-15
- Bolt Carrier Group: AT3 M16 profile, 5.56 NATO/.300 Blackout, black nitride
- Charging Handle: Breek Arms Sledgehammer, gas-busting, 7075-T6 aluminum, Black
What’s Included
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Questions & Answers
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Warranty & returns
Backed by the AT3 Lifetime Warranty!

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.
Limited Warranty
Breek Arms products are covered by a limited warranty against defects in materials and workmanship. If your product is found to be defective under normal use, Breek Arms will repair or replace it at their discretion. This warranty does not cover damage caused by misuse, modification, or normal wear and tear.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.