Thread: Modern triggers

Originally Posted by gundoc

One of the problems with the BSA triggers is the large contact area between the sides of the sear and the trigger housing which can create friction and jamming of the sear due to drying oil, dust, rust, etc. This can be improved considerably by relief grinding the sides of the sear to minimise the contact area while making sure to leave a boss area around the pivot point to maintain lateral positioning. The mating surfaces also benefit from careful stoning without altering the engagement angle too much(3-5 degrees is plenty) and then doing the screw adjusments. Careful tweaking of the wound vee spring can also help.

How difficult is it to reassemble a dismantled Royal trigger ? I looked at it and thought might need a jig ? I did polish all the faces that I could get at with 800 w&d on a points file including the housing faces and squared up the engagement of the pawl through the external notch in the housing. Vast improvement but not a superb trigger as hoped for.