I do not care for the current X Mark Pro trigger, mostly because I do not like that danged screw where it is. In order to get one down to 3 pounds or thereabouts, they usually require a lot of adjustment, which means the screw is sticking out like a sore thumb. I was replacing mine with either a Timney, or an older style Remington, until I heard of Ernie the Gunsmith's springs. I ordered a couple, and they work, turning the X Mark Pro into a pretty decent trigger.