View Full Version : Tech. Question

06-17-2009, 10:37 PM
Hey RifleGear,

I have a tech question for you. Will your Adams Arms gas piston retro kit fit onto a CMMG upper; SKU: CMMG-16MC? I only ask this because this upper has a larger couture barrel and I know that Adams Arms is particular about the size of the barrel and the diameter of the barrel around the gas port.

Thanks in advance for your time and help,


06-18-2009, 12:35 PM
Yes it will fit, the diameter of the barrel under the gas block is .750 on the MedCon barrels, same as for gov't profile barrels. I built one of my personal uppers using a 16" MedCon barrel and an Adams Arms kit.