Handheld Aircraft Ordnance-Micro Scale

Sprinkled in some of these little ones so that I can relax after spending time, sanity, and coolant (water) modeling aircraft. This project will update as I try to keep my head cool while making models, especially with a broken 3D printer and a corrupted TF card...
Vickers K: British 7.7mm defensive aircraft machine gun, capable of 1,200 rpm--If you cared to reload, that is.
ShKAS: Soviet/Russian 7.62mm aircraft machine gun capable of 1,800 rpm--Take that, MG-42! Can't use standard rifle ammo, though, and vice versa--Rifles can't fire ShKAS cartridges. You will end up jamming the gun for the former and destroying your rifle with the latter.
MG-15: German 7.92mm machine gun used as offensive armament on the Do-17. Decent rate of fire, but not sustainable with the 75-round magazine.