He is used to leaning on the bit from his previous training. I just got him in August. This is what I'm currently riding him in. Metalab Black Satin Training Bit - Black Satin - 5" Specialty and Other Bits Western HorseLoverZ.com
He is getting better, but he expects to use the rider as a "fifth leg." He seems to have most of his training in dressage. I'm thinking about switching him to a full cheek snaffle, which is a favorite of mine and my other horse, but I'm trying to understand all my choices. The gentleman I got Gun from knew nothing about horses and rode him in a tom thumb, and pulled him up pretty hard for stopping.
And if the difference was evident to me, I wouldn't be asking.
I've never seen a gag-bit up close, and I want to understand the action of how it moves.