browning challenger 3

[drewski]

missing lock washer for sight base.  not able to find the part anywhere.  anyone know who may have this part?  browning directs to a couple of websites for parts, but none have this listed. M4 external tooth washer fits the screw, but just a bit wide for the slot.  

also having issue with trigger reset.  have to click trigger forward to get reset.  anyone have this happen?

[Sunfish]

You might have to make one out of another. Parts are scarce for these

[Grayfox54]

 Will the washer for a Buckmark work? Same basic design. Or you could just use a regular lock washer, purple lock-tite or maybe trim the lock washer you found a bit. 

As for the trigger issue, I might be a broken or bad return spring. However, the vast majority of problems with semi-auto .22s are usually caused by years of built up gunk in the innards. Generally a detail disassembly and a really good cleaning solves the problem. 

[drewski]

Full breakdown and cleaning when purchased.  Fair amount of gunk buildup, but not terrible.  I filed down the washer, works great so far.  Trigger seems to be the disconnector spring not getting solid contact for trigger reset.  Looks like browning made a few minor changes with the modern buckmark versions, but i may be in luck for the disconnector spring.  Little stinker is mighty accurate.