thumbs forward grip - use left thumb over right thumb

left thumb over right thumb because right grip should never change from the draw, right thumb over middle finger is a good one hand grip, by breaking grip with right thumb up you dont have the maximum strong single hand grip and before two hands meet and thumb is up you may have your gun grabbed or drop it, not just that because you may need your left hand for something before it meets right hand so never change a good strong right hand grip, "its a handgun not a hands gun" you in close quarters may need to shoot with one hand so this is why that one hand grip should never change and be strong so you can retain your handgun. nir maman on combat grip IDF https://www.youtube.com/watch?v=gY7cmZ39oLE&t=0s israeli forces know a good grip and have been in more combat defense situations thousands to one over us in american so they know what they are talking about from experiences, unlike us they learn from failures on the street in defense situations, americans go by what they feel is right but facts dont care about our feelings on how to do something, there is a right way to do everything thats optimal