As the title says, yes, a double sector. Instantanous trigger response (cut-off lever works with this gear so you still only get one shot on semi), double the ROF with low-speed, high-torque setups.
Heres a pic of the beast;
Some issues I see is with HIGH ROF setups the gun will short stroke because the sector will engage with the pistons rack before the piston/spring reaches total decompression, sounds bad. I think it would work best with high FPS setups with people who want trigger response, low rof setups with low voltage batteries who want double the ROF off one cycle and those who want to experment and ruin pistons with high ROF setups.
Sounds liek fun, what do you think?