Spitlebug's files are provided in orthographic (multi-view 2d) file format without labeled dimensions. You can extract your own dimensions from the various files to view them if needed.

Currently all the files I have on this page are from a Bushmaster B2K4.

Part: Bolt

Formats:
AutoCAD drawing (.dwg)

Created by: Brenden "Spitlebug" Gansner
Description: B2K4 bolt.

Part: Bolt pin

Formats:
AutoCAD drawing (.dwg)

Created by: Brenden "Spitlebug" Gansner
Description: B2K4 bolt pin.

Part: Valve housing

Formats:
AutoCAD drawing (.dwg)

Created by: Brenden "Spitlebug" Gansner
Description: B2K4 valve housing, cupseal not included.

Part: Stock eye tab

Formats:
AutoCAD drawing (.dwg)

Created by: Brenden "Spitlebug" Gansner
Description: B2K4 eye tab (stock).

Common parts:
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.