Depending on what was inside the archive, here is how to proceed:

Select "Extract Here" or "Extract to Heckler&KochMP7/".

The software will automatically detect the other parts and stitch them together into a single folder or file (usually an .STL , .OBJ , or game-specific format). 3. Common Use Cases & Next Steps

Ensure you have every segment of the archive (e.g., part1.rar , part2.rar , part3.rar ). If any part is missing or has a different file size than the others (except the last one), the extraction will fail.

Open the extracted .STL or .STEP files in a slicer like or PrusaSlicer .

Place all parts into a single, dedicated folder on your desktop or drive. 2. Extraction Process Software: Use a tool like WinRAR or 7-Zip . Action: Right-click only on "Part 1" .

Import the files into or Blender to view the internal mechanical assembly of the firearm.

If the files are for a game (like Assetto Corsa , Garry's Mod , or Ready or Not ), move the extracted folder into the game's Mods or Addons directory.