AFAIK, You DO have to have the shotgun specific base, and I know of no other option but EABCO.
Now, you could find/have made shorter screws, I guess, as the holes are the same, just more shallow threads on the TC shotgun barrels. There are models specific to 12 and 20ga.
Last edited by ALMODUX; 03/31/21 04:14 PM.