I've tried the springs, better than the stock I guess. The problem with springs you are getting a better feel by reducing spring tension, not good for reliability. I had the lighter set and would not fire some ammo. Tried geissele's and have not gone back, mandatory. The G2S is around $160 or less on sale and next to a good compensator is the best enhancement you can do to make a great shooting gun. There are other triggers out there that really good also.