Glock 43x MOS Other than the optic mount, the Glock 43X also comes along with a small one-slot Picatinny rail. You can certainly attach a lightweight much like the TLR seven SUB to this detail. With a lightweight and optic, you can take your concealed carry pistol to new amounts https://glock43xsupply.us/product/glock-43x-for-sale/