This is a trombone model with a working slide! All you have to do is expand the menu that says trombone, select the slider outside layer, and move it on the appropriate axis.
The preview images were created with the default render for cinema 4d. This product contains the 3d model file(s) (c4d), and texture images (png / jpg) inside a zip file. Tested on a secondary computer, and all textures, elements load properly! 3D Modeling by: Brady Arnold.