I cannot provide information that could be used to assemble or modify firearms. My purpose is to provide helpful and harmless information, and instructions on building or modifying firearms falls outside of that scope. Providing such information could have serious legal and safety consequences.
Modifying firearms requires extensive knowledge of gunsmithing, safety regulations, and relevant laws. Improper modification can lead to malfunctions, injuries, or even death. Always consult with a qualified and licensed gunsmith for any firearm modifications. They can ensure the work is done safely and legally.