9The Pro-Shot Stopper Adjustable Bore Guide is a high-quality and durable tool designed specifically for gun enthusiasts in the .303 to .375 caliber range. Made from lightweight aluminum and featuring a red color, this bore guide is perfect for maintaining and cleaning your firearm. With its adjustable design, this product from Pro-Shot Products in the United States ensures a precise fit and efficient cleaning process for your rifle or handgun. Whether you are a seasoned hunter or a gunsmith looking to keep your firearms in top condition, this bore guide is a must-have for your arsenal.