Every time Guy pulls out his 1911 .45 pistol, there is a sound of the hammer being pulled back and/or the safety being taken off. However, Guy is consistently shown with the gun in his left hand, and the thumb safety switch on a 1911 is on the left side of the frame (side opposite of your left hand's thumb). It is possible he's left the safety off, and is thumbing back the hammer, but this would mean he's carrying it with a round in the chamber, and the hammer down, with no safety - the most dangerous possible way to carry a 1911 (known as "Condition 2"). A slight tap on the back of the hammer, while in this condition, would set a round off. As a trained guard who carried a 1911 often, he would have known better.