# Mountain Billy Gun Lab

## About

Mountain Billy Gun Lab builds rimfire AR-pattern firearms under its Goat-15 name, and its guns also appear marked Mountain Billy Gun. The Goat-15 Helium is chambered in .22 LR with a 16-inch barrel and a black finish, and the Goat-15 ATOM is a shorter .22 LR configuration with a 7.8-inch barrel.

## Mountain Billy Gun Lab Products (2 total)

| Product | Caliber | Price |
|---------|---------|-------|
| [Mountain Billy Gun Goat-15 Helium .22 LR 16in Black](https://gunsnation.com/p/mountain-billy-gun-goat-15-helium-22-lr-16in-black/UCExpud9B) | .22 LR | - |
| [Mountain Billy Gun Lab Goat-15 ATOM .22LR 7.8in](https://gunsnation.com/p/mountain-billy-gun-lab-goat-15-atom-22lr-7-8in/UCExpudDF) | .22 LR | - |

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*Data from [GunsNation](https://gunsnation.com)*