So I designed this a while back to protect my Focusbug Handset. Has kept it free from any damage. I have printed it in pla and asa 100% fill. It slides in and locks into case with the units mounting block. Link to STL below:

https://www.dropbox.com/s/3h39s1fkm1bkil2/CineRT%20Handset%20Protect.stl?dl=0