Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
You'll be taken to GrabAGun to complete your purchase.
Hunter's Outpost earns a commission from affiliate links at no extra cost to you.
SKU: GAG_MBGLGOAT15TB1
Mountain Billy Gun Lab GOAT-15 Helium Features The GOAT-15 Helium is built from polymer upper and lower receivers the material selection most responsible for the platform s extraordinary 2 lbs. 14 oz. unloaded weight and the primary reason the GOAT-15 Helium can credibly claim the title of lightest semi-automatic rifle in the world. Despite the polymer construction the GOAT-15 Helium is engineered to withstand the rigors of outdoor use delivering the structural rigidity and durability needed for reliable semi-automatic blow back operation across the range of .22 LR ammunition types. The ergonomic polymer design provides a comfortable secure grip that promotes precise handling and effortless operation for shooters of all experience levels and physical builds. The 16-inch CMV steel barrel with 1:16 right-hand twist is optimized for the full range of standard .22 LR projectile weights and the 1/2x28 threaded muzzle provides immediate suppressor compatibility with the broadest ecosystem of .22 LR suppressors and muzzle devices on the market. The 7-position adjustable buttstock allows the GOAT-15 Helium to adapt to a wide range of shooter builds and shooting positions providing the same length-of-pull flexibility that modern sporting rifle platforms are known for in an ultralight rimfire package. The standard Picatinny rail with M-LOK mounting provides a versatile accessory platform for optics lights and other accessories along the full length of the handguard. The patented tamper-resistant safety delivers reliable secure safety operation and the blow back semi-automatic action cycles dependably across the standard .22 LR ammunition spectrum. At just 3 lbs. 2 oz. with a loaded 10-round magazine installed the GOAT-15 Helium is an exceptional training platform for shooters who want to replicate the ergonomics and controls of a modern sporting rifle at rimfire cost and with rimfire recoil. Whether used for marksmanship training steel challenge competition or lightweight field use the GOAT-15 Helium delivers unmatched versatility and convenience in the lightest semi-automatic rifle package available anywhere. Mountain Billy Gun Lab GOAT-15 Helium Specifications Manufacturer: Mountain Billy Gun Lab Model: GOAT-15 Helium Type: Semi-Automatic Rifle Caliber: .22 LR Barrel Length: 16 Barrel Material: CMV Steel Twist Rate: 1:16 RH Thread Pattern: 1/2x28 Overall Length: 27.75-30.75 Weight Unloaded: 2 lbs. 14 oz. Weight with Loaded 10-Round Magazine: 3 lbs. 2 oz. Upper Receiver: Polymer Lower Receiver: Polymer Buttstock: 7-Position Adjustable Rail: Standard Picatinny with M-LOK Action: Blow Back Single Shot Semi-Automatic Safety: Patented Tamper Resistant Magazine Capacity: 10 Rd. Magazines Included: 1 Round 10 Round Country of Manufacture: USA