Welcome to Mountain Billy Gun Lab, LLC. (MBGL)



Welcome to Mountain Billy Gun Lab – your premier destination for specialized firearms. We have crafted the world’s lightest semi-automatic rifle. Creating a lightweight gun was important to us as we have experienced many certified gun instructors express their desire for a realistic training gun. The GOAT-15 is the perfect training gun due to its compact size, lightweight construction, and patented safety. The versatility and reliability of our specialized firearm makes target practice, plinking, and even hunting small game much more fun and convenient. 


Our GOAT-15 is meticulously designed for those with an active lifestyle looking for a lightweight, compact gun to carry while hiking or camping. As a 22 long rifle, it has been praised in the gun training community as an ideal training gun to be used for steel challenge competitions. Friends and family with little to no experience shooting a gun will enjoy learning with this specialized, lightweight rifle. Proudly made in the USA with a patented, tamper resistant safety, the GOAT-15 22 long rifle is a must have for gun enthusiasts, survivalists, certified gun instructors, and nature lovers alike!