Toolcraft Diamond DLC BCG 308

Expected in March
Coming Soon!
MSRP: $279.99
— You save $30.00

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Free Shipping on all Toolcraft Bolt Carrier Groups!

This Toolcraft 308 DLC Bolt Carrier Group is designed for use in DPMS pattern AR10 rifles chambered for the 308 family of calibers. Not for use with 6.5 Creedmoor or DPMS G2. It is a full auto BCG and has forward assist serrations.

The Ionbond Diamond Like Carbon (DLC) finish is an incredibly hard (90 Rockwell) self-lubricating finish. This makes it extremely resistant to wear and corrosion.  This also makes it an ideal finish for a critical part like an AR15 bolt carrier group.

Even a great finish like DLC is only the last step in the manufacturing process and there is a lot that goes into every Toolcraft BCG prior to the finish.

To start with, Toolcraft uses a type of 8620 steel in their carriers that is not used by anyone else in the industry.


Beyond the carrier steel, Toolcraft uses state-of-the-art machinery, processes and quality control to ensure that every bolt carrier group is capable of the most demanding missions. This has made Toolcraft a first choice of OEMs and the U.S. Military.

dlc-bcg-smooth-carrier.jpgAbove: A smooth finish, free of machine marks is the end result.

This BCG is not recommended for the 6.5 Creedmoor or DPMS G2 rifles. The 6.5 Creedmoor is a higher pressure cartridge and a BCG with a smaller diameter firing pin is preferred. For that application we recommend, and have gotten good feedback on, this 308 BCG available on the Aero Precision website: Aero Precision 308 BCG.

Toolcraft products carry a Lifetime Warranty.

See our interactive 360-degree views of all Toolcraft BCGs here - Toolcraft Gallery

Get more details and pictures on "The Diamond" here: Toolcraft Diamond DLC BCG Review - The Best BCG Ever Made?


Bolt Shot Peened; MPI
Bolt Material 9310 Steel
Bolt Finish Diamond-Like Carbon (DLC)
Caliber 308 Winchester Family
Extractor O-ring Viton; Mil Spec
Carrier Material 8620 Steel, Toolcraft Proprietary
Carrier Finish Diamond-Like Carbon
Carrier Design Full Auto Style
Gas Key Material 4130 Steel; Grade 8 Gas Key Screws
Cam Pin Material 4140 Steel
Cam Pin Finish Diamond-Like Carbon
Firing Pin Material 8740 Steel; Hard Chrome Plated
Manufacturer Toolcraft


Note: Some dealers are selling Toolcraft BCGs that have been finished after leaving Toolcraft. The finish on those BCGs would not be warrantied by Toolcraft. All Toolcraft bolt carrier groups sold by SpiceTac include the 100% no-questions-asked Toolcraft warranty.


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