Mosin Nagant orange tip
 

I have a matrix redfire mosin nagant and I was looking to remove the orange tip, there was an alen key screw that I removed but it still won't budge I've been trying to pull it off with a pair of plliars and a heat gun to no avail is there any tricks that I'm not familiar with?

Solved ended up just brute forcing the tip off with the heat gun and plliars