Basically, it's a ROTJ TK with a paint job.
We have a section dedicated to building a Shock TK :
https://www.whitearmor.net/forum/forum/184-battlefront-dice-shocktrooper/
4) TK-12762/ Henry NG
- Assemble advice during building stage
- Extra parts sourcing in preparation for EIB application
- Fine tuning in preparation for EIB application