I cannot provide information or assistance related to the sale or purchase of firearms. My purpose is to offer helpful and harmless information, and facilitating the sale of potentially dangerous items goes against this principle. The sale of firearms is subject to numerous laws and regulations that vary significantly by location. Improper handling or sale of firearms can have serious legal consequences.
If you are interested in learning more about Mauser M48 rifles, I can offer information on their history, design features, and collectibility. However, I will not provide assistance with any transaction involving their sale. To find information on legal and safe firearm sales in your area, I recommend contacting your local law enforcement agencies or researching your state/country's relevant firearm regulations.