Like most people, I use rampage replay route for Jury Fury mission. But there is different way in Anti's and Marushko's speedrun videos. They use clothe replay and phone talking. But I can't understand how it make. Is there any tutorial about this?

Q: How do you do it?
A: It requires a submission vehicle and frame perfect timing. Hold submission and release it frame perfectly when Tommy has fully left the vehicle. You will then have an ONMISSION=0 phone call which can be answered after starting Jury Fury. When the call ends Jury Fury will start again. ( http://writening.net/page?zPvi7s )

There is no video tutorial about it. I guess.

I guessed it was done like this and tried it many times. In that case, I couldn't catch frame. Thanks.

where does the shotgun come from on Riot? anti and Marushko don't pick it up before the mission

Cop car gives you a shotgun

Cop car gives you 5 shotgun shells