This is the Atlas Socommish 19 w/ frame weight hole. Meant to look similar to the MK23 Socom, Front end has a little hole for a double aa battery or a weight of similar size. So, you need much less effort to maintain control during recoil, muzzle rise, and stay on target. Pew Pew Pew... Uses Polymer80 G19 Rails Print Settings Esun or Inland Brand PLA PLUS+++ preferred Nozzle 220 Bed 62 Treesupports with 20 percent infill RAILS DOWN ++++++++++++++++++++++++++++++++++++++++ reddit u/Spaceboundtactical Odysee SpaceboundTactical DefCad Spaceboundtactical Feel Free to share your prints!!