The icons for the three handguns (Rook, P07, .45) appear to be inconsistent across relative sizing and positioning. The file for the icons is 1024x512, however the positions of the handguns in relation to the canvas size is inconsistent.
This makes it difficult for dialog creation, should the user wish to align icons correctly.
Additionally, the icon for the Rook has a white outline suggesting it hasn't been cut out cleanly. {F21683} {F21684} {F21685}
I have attached an image demonstrating the inconsistencies, along with a rough center line to demonstrate misalignment.
I think these are just temporary icons, probably were quickly made long time ago during pre-alpha development. Its release already and we still have these stubs in the game, this needs to be fixed. Mk200 also suffers from being mispositioned bit down and bit right. Bit right probably because of sound suppressor icon which has real size of suppressor while other weapons have shortened suppressors to fit into the image.
I've compiled all current UI icons problems in one ticket: http://feedback.arma3.com/view.php?id=15670