The TTO, (Todd's Tiny One) is a shortened version of the FSC556 with the tines removed and recrowned for those looking for the performance of the DNTC in the shortest possible package.
This unit is approximately 1.60" in length, .875" in diameter and is threaded 1/2x28 RH. This device is not suitable to be used as a suppressor mount and therefore ships with a crush washer. Video Demos
Beta C ComparisonOne HandOn M249 SAW