Wow that was a ******. Had to find a 3 foot Fence pole Duck tape the wrench on it and use leverage to get that basterd off. But its done, Thats the good news, the bad news is I Scratch the metal finish on both my barrel and the comp lesson learnt, only use right size Wrench's and not adjustable pliers when tighting Comps on muzzles.

Couple questions though

Do I need to re-zero since I technicelly changed the barrel design?

If its not 100% strait, will it throw off my aim a bit? I'm pretty sure its where its suppose to be but i dont' have a barrel lvler.