Yeaht he lighting and pose could use some work. Most of the model is in shadow. The hammer is not at a good angle for viewing. Check out some info on silhouette.
well.. my point still stands, I'm not hammering anyone. Just clarifying the intentions. I'll go ahead and lock this thread as its not going anywhere after this.
for future designs, start with a bullet, then design (or steal an existing design) for a bolt, then add a fire control group (ie trigger, hammer, sear) and the rest will come naturally.