airsoft AR adjustable stock

The stock body has two versions: a thick buttpad version and a thin buttpad version. The thick buttpad version is slightly loose when installed.

The print profile uses my personal PETG parameters; it is recommended to use your own. Supports have been manually painted, but you can also choose auto supports, though that will generate many unnecessary ones.

You need to provide your own spring for the retaining rod. An outer diameter of 6mm-8mm will work, but after accounting for wire diameter, the inner diameter needs to be greater than 5.8mm. Cut the length as needed; I used approximately 10mm.

I won't go into detail about the specific installation process; I've provided a cross-section diagram, which should make it clear.