Unfortunately these sights are not compatible with the G3C model.
no the g3c takes glock sights
No, these fit the Taurus G2 series. The good news is that you can use any sights made for Glock 17 & 19 pistols with the G3c. The bad news is that you will need a Glock front sight tool to install the new Glock compatible front sight, and yes it will barely fit in the front of the G3C slide where you need to manipulate it. This isn't a TOUGH process, but if you're new to guns and tinkering, it may be best to have a gunsmith do this for you
Everything in the G series of taurus is pretty much all compatible aside from sights. The sights on the newer g3 series takes Glock sights. So a lot more compatibility