First, I drill 1/2" dia. hole for front action hole, 3/8" for rear.

The barrel is 1.3" OD. I use a 1.25" diameter half round.

The trigger works varies depending on model and type, but I generally use a 1/2" dado bit 2" long. My actions (Striker) are 1.7" to bottom of linkage, trigger is 2.5" deep.

Barrel starts at 1" dia. Depending on profile, I may use that or 3/4" and a dremel tool for final fit.

I use a carriage for my router so its just a mark, plunge and pull gently. Lots of times I drill the corners to final depth and route out box.

Exterior is all table saw, band saw, table belt sander and rasps and sandpaper.

Lots of work, but I don't have a mill, which would be ideal. I DO enjoy woodwork though, very calming.

Larry
Tinkerer