Yes they will fit and work just fine

Hi David and welcome. Yes, these will fit the Taurus G3c no issue. Cheers, stay safe and enjoy!

Yes, Glock sights will generally fit the Taurus G3C. The G3C is designed to use the same dovetail cut for sights as Glock pistols, making it a direct replacement option. However, it's important to note that not all Glock sights will fit perfectly. Some Glock sights may have a rear sight that extends too far back on the G3C slide.
Key points to consider:
Dovetail compatibility:
The G3C slide uses a Glock-style dovetail, making it compatible with most Glock sights.
Front sight:
The front sight on the G3C is also designed to accept a Glock-style front sight.
Rear sight:
While most Glock sights should fit, some rear sights might extend beyond the back of the G3C slide.