Curved Sear Mod
What it is and why
Part of the quest for the nicest trigger pull.  This should apply to all Autococker sears except direct solenoid controlled electro-cockers.  This started the other night when I noticed that as I pulled the trigger, it got harder and harder until the hammer was released.  I found that I was actually compressing the main spring slightly as I pulled the trigger.  The back edge of the  sear is ground flat instead of being a radius about the pivot point.
How
Note the drawing.  The right hand edge is ground flat instead of being curved.  This means that as the sear drops, the lug must move back.  I have some aluminum blocks with holes that happen to be roughly the same length as the sear.  I drilled the hole to 1/8" and put the sear pivot pin in.  I placed the block ontop of 400 grit sandpaper which was on a machined surface.  I proceded to "kick" the "toe" of the sear down into the paper untill I achieved a radius curve along the pivot point.  I only needed about the first 1/16" curved, because that is the only part that the lug rides on.  I should have a pile of those blocks if anyone wants some drop me a line.
Drawing not to any scale.  Freehand.
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