I've used a Surefire L1 LED for EDC for the better part of a decade. I decided to go with something presumably giving better throw to light up farther away. I went with a sale and ordered the Surefire G2X. I'd like to keep the twist cap I'm used to with the L1. Is there a tail cap that gives the temporary low/high by pressing or continuous on low/high by twisting that will work with the new G2X? If so, which one do I need and where do I get it? Thanks.