My TC Bone Collector has a problem where the firing pin does not hit the primer hard enough. When it first happened TC sent me a new breach. This did not solve the problem so I sent the gun back and they went over it. It still has the problem. I think either the firing pin is slightly to short or the spring that sends the hammer forward is to weak. To get through this season I put two layers of duct tape on the hammer. That seems to do the trick for a temporary fix. Maybe someone makes and after market kit the fix this???