If the user's holster is older and does not have the threaded hole and the user is unable or willing to have it added, then DAA offers another solution. A drop-on Race Master Muzzle Support Body Adapter is available, which attaches to the existing holster body without the need of any modification or additional fitting. Note, that this part is available for the RIGHT-HAND Race Master Holster ONLY (not left-hand RM, or Racer holsters).
Disclaimer: All aftermarket upgrade parts require necessary skill or modification to install and assemble, please consult with your airsoft technician if needed.