airsoft pistol wall bracket

couldn't find a wall mounted airsoft pistol bracket that i liked, so designed this. lower arm goes through trigger guard, and upper arm goes over the top of the slide at the muzzle. the weight of the gun holds it in place and is no need to remove anything mounted on the rail under the slide (laser, light etc)

STL is for a WE 1911, but the f3d project has three parameters that can be customised for different pistols

three measurements required (see image above, fusion parameter names in square brackets)
A: width across trigger guard [armWidth]
B: height from top of slide to top of trigger guard [armVerticalSeparation]
C: distance from front of trigger to back of blade sight on top of slide [armHorizontalSeparation]