. Muzzleloader Barrels, Ruger 10/22, BPCR, Muzzleloading Supplies | Green Mountain Rifle Barrel CO.
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It’s August, and it’s Summer.

That Means it’s M4 Season!

GMRB’s August 15% OFF SALE includes the 16”, Fluted 5.56mm GM-M6,the Blued, Matte Finished M4 style 10-22 901591, and the 5.56mm 14.5” GM-M29! Get Them While They’re HOT!



Notice for our muzzleloader project builders:
As of July First, there has been a price increase on Green Mountain Rifle Barrels’ 36” and 42” Black Powder Muzzle-Loader Blanks.
Thank you for your support.



It’s NEW,

It’s LIMITED!

Click Here for details




Green Mountain Rifle Barrels provide the world's best competitive shooters and enthusiasts with accuracy and dependability they can count on. Uncompromising quality is achieved by crafting barrels using a hands-on approach in production. Individual attention is dedicated to ensure that each barrel is of the safest, most accurate and dependable quality. Select a category to left to view our premium quality replacement rifle barrels.




NEW From GMRB!

Green Mountain Rifle Barrel Co Now Offers LASER Engraving for a Truly CUSTOM Barrel For Your New Build!

Click HERE For More Details!





Come See Us!

Our New Retail Store is located right in front of our Factory at 153 West Main St in Conway, New Hampshire



Please note: Same-Day Shipment of in-stock orders is not Guaranteed. In-stock orders placed after 11:00 AM (Eastern) Thursday will be processed the following Monday. (holidays excluded) Please call us to discuss Time Sensitive requirements. Thank you