Models for the original Ion markers. When working with 3d solid models in AutoCAD, always remember your important commands! isolines, re, 3dorbit (AutoCAD 2009+), view, vscurrent.
AutoCAD 3d solid (.dwg)
Description: This file contains the following 3d solid parts: bolt, breech, fire chamber, bolstop. Quoth the author: "I have successfully used this model to design new valves that fit into an Ion, so hopefully all the important dimensions are be accurate enough for most users." He also mentioned that the inside diameter o-ring grooves aren't exact, but are close.
Description: Inventor assembly file for the 360º QEV. This contains the QEV components, seals, and poppet; also contained is an assembly structure that holds them all together with constraints.
Description: NDZ' first version of their Skeleton bolt. They later released a version-2 which was lighter in weight.
Description: Warrior bolt from ANS. There's a problem though....I can't remember if this is the defective versino-1 bolts or if it's the new/current version-2. The original v1 bolts snapped and broke almost pandemically. If I had to guess I'd say this is the version-1.
Description: Feedneck model, reasonably accurate from what I remember.
Description: Model for the Tadao Raider circuit board. If you need a model of a main board for your assembly, any board should work okay (including this one).
Check the CAD file post index for links to universal parts which are compatible between multiple markers. This may include feednecks, regulators, air fittings, solenoids, and others.