News & Promotions

Below you will find news articles and promotions offered by CMMG.Some promotional items may have limited availability or durations, so be sure to check back often for the most up to date info on what CMMG has to offer.

 

 

New CMMG .308 Firearms

We are offering a new line of .308 Firearms this year.

 

 

 

 

1st Generation 2 Stage Trigger Exchange

As part of our ongoing commitment to excellence and quality we are offering an exchange to our latest generation 2 stage trigger.

Improvements Include:

  • Full 22, 9mm and 308 Compatibility
  • Harder Metal Composition for Longest Possible Service Life
  • No Charge

1st generation style triggers were sold before Jan 2010. They may be identified by threaded set screw holes.

Please contact sales@cmmginc.com for instructions to exchange.

 

 

 

Transitioning to COLD HAMMER FORGED BARRELS

Our previous standard chrome lined 4150 barrels were made with a button broach process. The barrel starts as a bar that is bored using a gun drill. The lands and grooves of this process were made by pulling a button through the bore. Finally the barrel was contoured on a lathe.

Cold hammer forged barrels utilize the same steel, only they are manufactured differently. The barrel starts again as a bored out bar, however both the bore and outside diameter are oversized. This oversized barrel is inserted into a hammer forging machine. A mandrel is fed along with the barrel though the machine. Rotary hammers forge the barrel around the mandrel creating the final bore diameter and forming the lands and grooves. The barrel is then contoured and fished.

The cold hammer forge process offers distinct advantages. The process reduces the outside diameter of the barrel without removing material. This increases the density of the steel, making it stronger and more rigid. The crystalline structure of the steel is realigned to the desired rifle twist. Finally pulling a button broach through the barrel creates tiny pot and tear marks through the bore; whereas the hammer forging process leaves a super smooth surface throughout the bore, offering less resistance on the projectile.