Tuning How do you change the liner on an FX Impact barrel?

if its the old original smooth twist and not a smooth twist x then u cant change the liner. it is 1 piece. u can upgrade to an stx where you can change the liners but you have to get the kit. its about $300. but u can get a different caliber if you want. you basically have to pull that barrel and replace it with the new style 

I have an FX barrel that has the original smooth twist liner and I want to change it to an STX liner. How do I get the original liner out? I've swapped out liners on Crowns but this Impact liner seems to be integral to the barrel.

Thanks for your help, Jon

Click to expand...

https://www.youtube.com/watch?v=OxP2VSjgrD8

Go to the 33:30 portion of the video in the following link:

https://www.youtube.com/watch?v=RXZ8CrVVpIM&t=1903s