chef it depends on what you mean as performance
CCM makes some of the quietest internals, but you can do a lot with a stock valve
Originally Posted by DarkArmorPB
And... the new CCM lowers have a nice heavy hammer like the ST Phat hammer.
* Freeflow tungsten hammer (early model w/ 4 nylon set screws and flat lug): 74.67g
* BBT Phat Hammer: 40.50g
* Stock WGP hammer, flat lug: 39.50g
* CCM hammer: 42.55g