I've been searching for a STL file for a muzzle standoff device that would be compatible with a Ruger RXM. Something close to the device designed by Proof Mark. https://www.proofmarkllc.com/shop/muzzle-stand-off-device-msd-g19 . If someone could point me in the right direction it would be highly appreciated. While I've found several in the usual places, they will not work. I found one that sort of works. The original, while it does fit the rail section and aligns to the accessory rail slot, does not extend the full length of the dust cover. This will majorly complicate making a holster for this combination. Speaking from experience here. I've made several major modifications to the design that I've downloaded. It will fit the rail section and lines up with the accessory rail slot. The design has been strengthened in all major load bearing areas. However, lacking the proper measurement tools I'm not sure of the exact length of the beginning of the dust cover to the trigger guard area. I'll be upfront, I'm a noob on CAD Software. If any one is interested in possibly assisting in this project I'll gladly upload both the original design and some of my better remixes from FreeCAD to odysee.