I called in and was told to leave notes. I have a H&K USP-C in 357 Sig. the dimensions are the same as the others. I have Trijicon HD sights on it which is why I said tall sights. It has a GG&G tail adapter with a Streamlight TLR-7A with adapter 1913-4 on it. I have a standard size decocking lever on it. I will also be adding the HK45C magazine release (when I can locate one) which is slightly larger than stock. If you want pictures or want to call….please don’t hesitate. I am excited to receive a quality appendix option! Merry Christmas!