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CMMG
The CMMG MK3 6.5 Creedmoor bolt carrier group is built for shooters running modern long-range rigs on the LR-308 platform who demand reliability under demanding loads. This is a complete, ready-to-install carrier assembly engineered specifically for the higher pressures that come with 6.5 Creedmoor ammunition, especially when you're pushing the limits with maximum loads. Whether you're building a precision hunting rifle or upgrading an existing system, this BCG brings serious steel and smart engineering to the job.
CMMG designed this carrier group with high-pressure geometry in mind—the bolt and firing pin are both engineered to handle the stresses of hot loads without letting primers crater or exhibit premature wear. The carrier itself is chrome-lined, which means easier cleaning and longer service life between maintenance cycles. Every component is phosphate-finished for corrosion resistance and durability in the field.
This is a no-compromise part for hunters and shooters who understand that ammunition isn't one-size-fits-all and who want a carrier group that won't flinch when you're running premium, high-pressure rounds. Drop it into your Mk3 or LR-308 build and get back to work.
| Caliber | 6.5 Creedmoor |
| Platform | Mk3/LR-308 |
| Bolt Material | 9310 Steel, Phosphate Finish |
| Carrier Material | 8620 Steel, Chrome Lined, Phosphate Finish |
| Extractor Material | S7 Tool Steel, Phosphate Finish |
| Firing Pin Material | 17-4 Stainless Steel |
The CMMG MK3 6.5 Creedmoor BCG is designed for the Mk3 and LR-308 platform.
Yes. The bolt and firing pin are both engineered with high-pressure design geometry specifically to handle the pressures generated by maximum-load 6.5 Creedmoor ammunition and to reduce primer cratering.
The chrome-lined carrier resists corrosion, simplifies cleaning, and extends the service life of the component, making maintenance between range and field sessions quicker and easier.
This is a complete assembly that includes the bolt, carrier, extractor, and firing pin—everything you need to install into your upper receiver.
CMMG
The CMMG MK3 6.5 Creedmoor bolt carrier group is built for shooters running modern long-range rigs on the LR-308 platform who demand reliability under demanding loads. This is a complete, ready-to-install carrier assembly engineered specifically for the higher pressures that come with 6.5 Creedmoor ammunition, especially when you're pushing the limits with maximum loads. Whether you're building a precision hunting rifle or upgrading an existing system, this BCG brings serious steel and smart engineering to the job.
CMMG designed this carrier group with high-pressure geometry in mind—the bolt and firing pin are both engineered to handle the stresses of hot loads without letting primers crater or exhibit premature wear. The carrier itself is chrome-lined, which means easier cleaning and longer service life between maintenance cycles. Every component is phosphate-finished for corrosion resistance and durability in the field.
This is a no-compromise part for hunters and shooters who understand that ammunition isn't one-size-fits-all and who want a carrier group that won't flinch when you're running premium, high-pressure rounds. Drop it into your Mk3 or LR-308 build and get back to work.
| Caliber | 6.5 Creedmoor |
| Platform | Mk3/LR-308 |
| Bolt Material | 9310 Steel, Phosphate Finish |
| Carrier Material | 8620 Steel, Chrome Lined, Phosphate Finish |
| Extractor Material | S7 Tool Steel, Phosphate Finish |
| Firing Pin Material | 17-4 Stainless Steel |
The CMMG MK3 6.5 Creedmoor BCG is designed for the Mk3 and LR-308 platform.
Yes. The bolt and firing pin are both engineered with high-pressure design geometry specifically to handle the pressures generated by maximum-load 6.5 Creedmoor ammunition and to reduce primer cratering.
The chrome-lined carrier resists corrosion, simplifies cleaning, and extends the service life of the component, making maintenance between range and field sessions quicker and easier.
This is a complete assembly that includes the bolt, carrier, extractor, and firing pin—everything you need to install into your upper receiver.
