Handgun & Gatling Gun Silhouettes

We chose three weapons to design first to get a design flow, one in each weight/style category, the handgun (light), gatling gun (heavy) and plasma sword (melee). Here are some basic sci-fi handgun silhouette pieces ready for development, we like the bulkier outlines better, we'd like a powerful looking/feeling sci-fi revolver typed handgun that can fire off rounds quickly, with the gatling gun we differentiated with the barrel more than anything, here's the first 6 silhouettes, we plan to do 18 gatling gun silhouettes as the design is far bigger: