The clip-on cheek pad lifter for the VFC UMP. It enables the Aimpoint Comp M4 high-altitude optical sight

After installation, you can use the folding stock

Print with PETG-HF to balance durability and printability, or print with PA6-CF to achieve maximum durability and strength.

The PETG-HF profile has been added. Use Bambu PETG-HF consumables.