I teach low light principals for a Law Enforcement training company. One-handed operation is essential, necessary and and should be mandatory. Many years and the knowledge of several key individuals such as Ken Good, Vaughn Baker, Mark Warren and a few others I'm unable to give credit to at this time, have refined the use and design of one of the best lights on the market. Having said that, I'm not here to sell or Troll. This is my first post on this site and only want to inform, discuss and learn. Blackhawk is no longer producing the Gladius Maximus. Strategos International has obtained the rights to the Gladius, improved on the original design and is currently waiting on the delivery of their first batch. They have named it the SECUTOR PEL-6. I cant pronounce SECUTOR so I just call it the PEL-6. The rotating tail cap allows the user to operate the light with one hand. All the original specs of the Gladius plus a few modifications to improve it. I am strongly against discussing the lighting principals and tactics with non LEO, US armed Forces, and the select individuals of some very specific foreign agencies, I will say this. I carry a Gladius daily. I find it very useful in civilian life and you never know when the occasion will rise that I may need to use it as a weapon. before I was fortunate enough to be included in the Strategos circle of trust I had spent nearly $2000 on various lights and several $100 more in machine shops modifying some of them to meet my needs. After being properly trained in the lighting principals I landed on the Gladius and then bumped it to a CREEmator upgrade. Constant ON, strobe, momentary ON/OFF, can be locked out, programed, and bright enough at 275+ lumens. All this from I recently had the opportunity to handle a light that had combination of 15 different functions or settings. In my opinion it wasnt even practical. Shoot it was difficult to turn on let alone use. Maybe if had 3 hands I would have liked it.