What an excellant image. I love the darkness of the composition in light & subject material. At first glance, I thought someone else was holding the pistol but after reading JPR's comment I have to agree with his comments. Nicely cropped out elbow.
I really like this because of the placement of the arm right at the edge of the border; it can be him shooting himself or it could be another arm coming in depending how you look at it. The lighting is great and your style, as always, delights me.