Mountain Billy Gun Lab GOAT-15 ATOM 22LR Semi-Auto Pistol

Meet the GOAT-15 ATOM, the ultra-lightweight .22LR AR-style pistol designed for portability, ease of use, and all-day shooting enjoyment. Weighing in at just a fraction of a traditional AR, the ATOM is perfect for new shooters, youth, or anyone who wants a firearm that’s easy to handle without sacrificing performance.

Its compact design makes it a true go-anywhere AR pistol. Whether you’re heading to the range, packing for a camping trip, or stowing it in your vehicle, the GOAT-15 ATOM fits seamlessly into backpacks, range bags, and tight storage compartments. Built for comfort and control, it offers minimal recoil, quick target acquisition, and smooth operation—making it as friendly for beginners as it is fun for seasoned shooters.

Proudly made in the USA, the ATOM combines durability, portability, and safety with our tamper-resistant safety system, so you can shoot with confidence anywhere your adventures take you.

Firearm Features

• Ultra-lightweight AR-style pistol for all-day carry and shooting comfort
• Compact size fits in most bags, packs, and vehicle compartments
• New shooter friendly with low recoil and easy handling
• Chambered in .22LR for affordable, fun, and accessible shooting
• Tamper-resistant safety for enhanced confidence
• Proudly made in the USA