AR15 Bolt Ejector Disassembly / Reassembly Jig

thingiverse

I'll try and edit the jig so there are a total of 3 parts to print with a separate female threaded portion that can be printed with female thread pointed vertical to avoid the need for tapping and supports. STL is in inches, and in PrusaSlicer I simply scale my prints by 2540% (1.000" = 25.4mm). Any good AR15 builder needs to disassemble their bolt for headspace checking. The spring-loaded Ejector can be a royal pain to reassemble as it must be compressed into its hole while a 1/16" roll pin is hammered into place. Inspired by KEVINhenderson's tool, I decided to get more familiar with Fusion 360 (versus my native CREO 5.0 CAD) and designed a fully 3D printable jig with a few extra features: 1) Both Jig and Power screw are 3D printed 2) Hold bolt from rotating while hammering out/in the roll pin 3) Keeps tail of bolt fixed during hammering. Post-processing steps: A) Remove support material from 2 horizontal axis holes (this probably could be omitted since B) and C) are still required) B) Drill out smaller hole with a 17/64" drill bit C) Run a 5/8-11 UNC tap through the larger female threaded hole. Worked Great on Toolcraft and Stag Milspec Bolts. Removal of extractor is required as the main holding cradle uses the extractor's slot to keep the bolt from rotating during roll-pin hammering.