Lock and Load: The Reassembled Machinist Guide

[Myon88]

Pretty much, it's the same as WM - you gotta stand still since all your weaponskills will have cast times. Only exceptions are ammo procs that make weaponskills instant, and abilities of course can be used on the move.

Can u turn on GB then and move around and still retain the buff it gives?

GB doesn't fall off even if you decide to move around after turning it on - it stays on forever until you turn it off manually.