I've heard a few rumblings about a new action that may be coming out from Mesa Precision. Rumor has it that it will be similar to a Mesa Crux action, with a few enhancements/changes and the short action Ti version will come in at 18oz. There aren't a lot of threads on the Mesa Action, but from what I've seen, its the only option for a shorter bolt throw in an ultra light action. Just fishing to see if anyone else has any info on this.