How To Fix A Tac 5 Paintball Gun Dose Any1 Make An Paintball Gun Barrel Adapter?

Dose any1 make an paintball gun barrel adapter? - how to fix a tac 5 paintball gun

I bought a tac-5 paintball gun 98C W, but I have a good ol '/ A 16 "barrel, but the thread in the custom gun is bigger than the TAC-5.
I can buy an adapter to solve this problem, and if so, how r?