The day I got my Dragun, I installed this bolt firing only a few shots prior to the installation. Although the stock marker is pretty quiet with very little kick, this bolt helped to silence it even more. I hardly feel a kick at all now. The best thing is I don't need to worry about the insides of my marker getting chewed up by the stock bolt. Also, no oiling required.
I would recomend this bolt to anyone over their stock bolt.