Originally Posted by sobersteve323
Just so I have a point of reference, will I probably need to increase or decrease the reg pressure? It's the stock reg which is a pain in the A to adjust so I'd prefer to get going in the correct direction if possible, haha.
You shouldn't just throw in CCM valve spring and main springs in the gun and expect it to work with your setup by adjusting the pressure.
My suggestion is for you buy the entire lower tube kit. Because the valve and hammer are also the important parts.
Call up CCM and ask if you can get away with swapping in just the spring. My guess is no.