Guys, I'm not saying don't upgrade your trigger system, I'm just saying don't do "Garage Engineering", purchase a system that is proven and designed by engineers to work. As one member stated, the hammer has to be lighten as well as the springs, it's a system that is in harmony with each other. Snipping away from someone's, "I did a trigger job, and wow" on the web is not a good thing. You start messing with trigger, buffer springs etc. etc. and you will see that your shooting experience will be a day of frustration with the rifle ending up on the floor and the owner with a red face, trust me, I've seen it before on guys that thought they were making their rifle the "Glass trigger" king of snipping.. It always back fires.. Why are you spending $250 on up for a good trigger, it's engineered by ENGINEERS, and tested to work.. So upgrade like a drunk sailor, just be aware of how you upgrade... Keepem in the X...