Hello. Thank you for contacting us. We checked around and it looks like most G-Shocks should be able to take a NATO strap as long as you purchase the correct adapters for your watch model. Here is an example of an adapter that we found: https://countycomm.com/products/adapters-for-casio-g-shock-watches (you will still have to search around for the correct adapters that will work with your watch model). For reference, the width of our NATO straps are 24mm (or 2.4 cm). We hope this helps. Thank you for being interested in our products!
Customer Support answered on February 20, 2017