If you don't fill the tail switch side 1.5mm tritium sites, you can put a couple R-12 114 5/8 ID x 3/32 o-rings in the circumferential grooves for a bite grip that don't easily slip off in pocket.

I’m a flashlight junkie. There I’ve admitted I have a problem.
Almost perfect light and I highly recommend that if you need a light this size then do not hesitate and buy it right now. Seriously.
Build quality is unlike anything I own or have ever seen. It’s So so so good.
Good looking too, although I don’t really care about that much.
The clicky button is PERFECTLY recessed in the back , and brightness settings are simple and perfect. it would be very difficult to actually turn this on in your pocket or bag by mistake. THERE’S ONE COMPLAINT I HAVE.
This light is still small enough to make a very good keychain flashlight / self defense tool. Please please make the next batch with a large enough hole to comfortably slide around on a typical sized split ring keychain. Since there’s room near the tailpiece I’m going to drill my own hole, but a lot of folks out there would love to have this light but wouldn’t be able or willing to carefully drill their own hole.

I'm a big Reylight fan. I have a few aaa and aa Reylights.
It started as one, then it multiplied.
I had an issue with one of my aaa light and through facebook Rey told me how to fix it. It turned out to be a loose pill. I messed up the pill trying to tighten it. I told Rey my light has only 3 settings instead of 4. Rey sent me a new pill. Rey makes very good lights and he stands behind them.

My 4th Reylight to date. Been wanting this titanium LAN for a year or so but it's not easy to find in stock. The 219B 45k led is the best looking emitter ever made according to the majority of flashaholics. I would have to agree! Just get one of these Reylights if you want one of the best edc lights for the money. I've got about 75-100 flashlights and at the moment this is top 3 in it's weight class!!