Here is a list of modifications others have done to their model 60s.
Most of the DIY mods done to the model 60 are cosmetic, here are some model 60 bolts that were gussied up.
You could also blue your bolt for that stealth look
Chamfering your ejection port may help with a failure to eject issue.
This post from the Rimfire Central forum shows you have to perform a trigger/action job on a model 60
figured out that you can replace your trigger return spring with one
from a 3.5" floppy disc, it supposedly lowers the pull by a full pound or more.
lose the factory T-Nut for the front trigger guard screw, you can use an
#8-32 easy-nut in its place. Just use a good glue to keep it snug in
the wood and thread it into the same hole.
idea and pictures courtesy of Hotrod 9mm on Rimfire Central
You could also use an #8-32 T nut, glued in from the top
front action screw some owners chose to install an escutcheon from a
Ruger 10/22. The mod involves drilling the original hole to 7/16". You would also need to buy a new screw (#8-32 x 1/2" long, with an Allen head that fits the escutcheon)
owners have rotated their magazine 90 degrees to make loading shells
easier. The idea is that the barrel helps guide the cartridges in the
trick to getting a better trigger pull and reduce take-up is to drill
and tap a hole in the top of the trigger and install a set screw. I
believe a #6-32 screw was used.
This owner modified his stock to have an adjustable length of pull, see the full write up here
You can dress up your charging handle with the back end of a .45 ACP or 30-30 Win shell casing
While you don't see too many model 60s sporting a suppressor, it doesn't mean it cannot be done. Here is one from the Sniper's Hide Forum that uses an AAC Prodigy suppressor with a quick detach adapter
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