Servo Plug Adaptivity
 

Will this servo fit in the Tactic Micro TR124 Rx?........... http://www.hobbyking.com/hobbyking/s...c_0_075kg.html

We're not familiar with those products, so we cannot answer. There are several micro servos on the market. Here's one example:

FUTM0704 S3114M SRVO MCRO HT W/MCRO PLG