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Thompson 1928 bolt adapter

rsz_p_20211225_172251.jpg Thompson 1928 bolt adapter
rsz_p_20211225_172227.jpg Thompson 1928 bolt adapter
rsz_p_20211225_172209.jpg Thompson 1928 bolt adapter
bolt_adapter.png Thompson 1928 bolt adapter
bolt_adapter.stl Thompson 1928 bolt adapter

πŸ”« 3D models of guns or weapons are dummy objects or prop toys and have no real functionality as weapons. They are intended for entertainment or decorative purposes only. For any design violating our T&Cs, please report them.

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Creation quality: 5.0/5 (1 vote)
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  • bolt_adapter.f3d
  • bolt_adapter.stl

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Publication date 2021-12-27 at 00:01
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Published to Thingiverse on: 2021-12-26 at 01:17
Design number 593404
Punisher_4u

Punisher_4u

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3D model description

This is an adapter to use a Thompson 1928 bolt in a m1a1. I'm using it in an airsoft aeg to make a dummy replica.

I started with a 1928 bolt by MikeS on GrabCAD. I reworked it using dimensions from a real m1a1 bolt. I moved the charging handle hole to the slot for the blish lock so no modification to the bolt is needed.
https://grabcad.com/library/thompson-1928a1-bolt

Real m1a1 bolt are expensive and hard to find. Stripped 1928 bolts are still available. The slot for the blish lock is almost completely covered by the cocking handle.

I also made a printable m1a1 bolt.
https://www.thingiverse.com/thing:5174461

The airsoft cocking handle knob can be reused.
https://www.thingiverse.com/thing:5172034

The Fusion 360 file is included.

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