Wrong cap for my light - Olight RM2T Tactical Remote Pressure Switch

I went by a recommendation from somewhere I expected to be correct (Not OpticsPlanet) that this was the cap for my Olight M2R Pro Warrior but it isn't. It won't screw on. I decided that to send it back wasn't worth the trouble and finally found a magnetic one on the Olight website. I would much prefer this one, though. I don't know what light this is for, not mine, but if it's the one for yours it is well constructed and solid. Obviously I can't talk about electronics or the sensitivity of the pressure pad because... Well, it doesn't fit. But if it did, based on my experience the overall quality is such that it would work well and be better suited to combat than my new magnetic thing, which slips off at the smallest movement. It's hard to dislodge a screw cap that is well made. I would prefer that to the ease of use of the magnetic switch. That one is so easy to use that when it comes off four or five times during a hard movement to contact you can put it right back on easy peazy.