Answers for What size buffer is needed with this barrel?

+1-800-504-5897 Live Chat Help Center Check Order Status

About Us Policies Reviews How To

Entire Store
...
Apparel & Footwear
Astronomy
Everything Else
Eyewear
Hunting Gear
Lab Equipment
Military Gear
Outdoor Gear
Photography Equipment
Police, EMS & Fire
Shooting
Sport Optics
Sports & Hobbies

Shopping Cart

CMMG + Gun Parts CMMG, Inc Gun Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts + Rifle Barrels CMMG, Inc Rifle Barrels CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + AR 15 Parts CMMG, Inc AR15 Parts + AR15 Barrels CMMG, Inc AR15 Barrels CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts + AR 15 Parts CMMG, Inc AR15 Parts + AR15 Barrels CMMG, Inc AR15 Barrels CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + AR 15 Parts CMMG, Inc AR15 Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts + AR 15 Parts CMMG, Inc AR15 Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel?

Please enable JavaScript in Your Browser JavaScript is not currently enabled in your browser and due to this our site will not work as it should. While JavaScript is disabled, you will not be able to add items to your cart or browse all product options. Our site is powered by industry leading security standards for your protection.
If possible, please enable JavaScript in your browser for the best possible experience. If you cannot enable JavaScript or you are having technical difficulties, please — we are always here to help!

CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly

As Low As $173.49 Save Up to 14%

View Product

Write a Review

Provide Your Answer

Continue As a Guest

Email

Nickname

Country

State

Saving...

Sign In or Create an Account (optional)

or Register

Having an account with OpticsPlanet.com makes writing questions and answers even better! We’ll save all of your questions and answers in your account, provide you easy access to them, so you can see how the community has responded.

If you’d like to add a question without creating an account, you can proceed with filling out the fields on this form.

Show

Sort by

Filter by

Expert Answer

A

Answered by Hunter, Gear Expert, from OH, United States, on March 14, 2022

The buffer you need will depend on what length CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly you get. However, I recommend using either an H2 or H3 Buffer.

Was it helpful to you? Yes | No

Share

Compare

Compare

Compare

Compare

Compare

CMMG + Gun Parts CMMG, Inc Gun Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts + Rifle Barrels CMMG, Inc Rifle Barrels CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + AR 15 Parts CMMG, Inc AR15 Parts + AR15 Barrels CMMG, Inc AR15 Barrels CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts + AR 15 Parts CMMG, Inc AR15 Parts + AR15 Barrels CMMG, Inc AR15 Barrels CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + AR 15 Parts CMMG, Inc AR15 Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts + AR 15 Parts CMMG, Inc AR15 Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel? CMMG + Gun Parts CMMG, Inc Gun Parts + Rifle Parts CMMG, Inc Rifle Parts CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly CMMG, Inc .300 AAC Blackout Barrel Sub-Assembly Q&A Question - What size buffer is needed with this barrel?

Last updated 2026-08-03 UTC.