M92/M9 Front rail attachment.

thingiverse

We created our own version since we couldn't find anything online to print. Feel free to modify and enhance it - we're excited to see what you can achieve. I suggest using any settings that are familiar to you, but make sure the infill is at least 40%. Thicker walls will help hold the nuts in place without causing the print walls to break or deform from spinning. We added an extended version with a few minor tweaks, mainly smoothing out some sharp edges and widening the trigger guard section so it's not too tight. Of course, we also extended it. Check out our other prints on Thirtythree3d.com or our Etsy store.