This is a 4-position buffer tube end cap for Flygonial's Gryphon. It accepts std length stock covers.
https://www.thingiverse.com/thing:3576276

Since this eliminates the battery stock, there is a cutout on the lower right of the end cap for compatibility with gabycms' battery tray
https://www.thingiverse.com/thing:4142801

The lower screw hole is angled, however you will likely need to swap the screw for a socket head hex screw and use a ball driver.

Printed horizontal with supports touching buildplate.

Creality

Ender 5

Doesn't Matter

Yes

0.2

20% Cubic Subdivision