BudsGunShop.com - Mount on taurus gx4

Luckily for you, the footprint on the Taurus is for this Optic so nothing extra needed!!

Gx4 Toro is optics ready otherwise you'll need purchase adapter plate. Save yourself the hassle and just get the Gx4 T.O.R.o

Hi William, I disagree with the other 2 answers. The 507C uses the RMR footprint and will not be a direct fit. You will need the optional adapter plate sold separately at ShopTaurus.com
https://shoptaurus.com/slide-parts/taurus-gx4-t-o-r-o-adapter-plate-trijicon-rmrcc
Stay safe & have a great day!

Hi Wiliam and welcome. Nothing. this is a direct mount : https://taurusgx4.com/en-us/ --- Cheersand stay safe!