Thanks much ! Very nice ! Sweet Tiger you have there For sure the stock thumb disc makes it a little tight especially for left hand opening . I had a tactical 45acp disc a while back and liked it to . Tried a non tactical 45 acp but on another model can’t remember which one and it didn’t work well because your thumb would slip off sometimes without the tactical grooves on the side of disc. The model makes a big difference though as far as what thumb disc works best .