Human bone (humerus) airsoft foregrip

I took roughly half of the human bone model from Profguy and made it into a foregrip for an airsoft rifle, mainly as a joke gift. If you print it with the right material, it's easily strong enough to be actually used.

I printed it from white ABS @ 260C then applied very brief acetone vapor smoothing to get a smooth and dirt-resistant finish.

The model is split into two parts to enable optimal printing direction. Print both pieces standing upright to get maximum strength. The base needs to spring a little and it will probably break if you print it flat.

Hardware needed:
- 2x M4 * 30mm socket cap screws
- 4x M4 washer
- 4x M4 hex nuts (preferably 1 self-locking nut)
- 150mm M4 threaded rod / "allthread" (or a 145mm-ish M4 hex bolt)

Assembly:
1. Put a self-locking nut and washer on one end of the threaded rod. Pull it through until the nut can't go in any further. If you don't have self-locking nuts, apply some Loctite or superglue.
2. Insert the threaded rod into the bo