At first i enjoyed this bolt as it is smoother operating than the stock bolt. Their is also less kick than with the factory bolt. Unlike some other people have stated i had no problems with velocity changes. The marker Chronoed at 286 ft per sec with the stock bolt and 284 with the bandit bolt. My problem with the bolt was that the third time out the set screw that holds the spring and check ball that holds the pin in fell out in the middle of a game and the parts were never found and i have had to put the stocker back in.
I liked this bolt a lot but if you have or plan to purchase one i would take out the set screw and apply a little bit of thread lock on it. over all i give it a 6 of 10