Mountain Billy Gun Lab

Mountain Billy Gun Lab Home of the lightest semi-automatic rifle in production

The results are in... ☕GOAT-15 Rifle = your everyday coffee.GOAT-15 SBR = the bold latte.And the GOAT-15 Pistol?Cold bre...
06/19/2026

The results are in... ☕
GOAT-15 Rifle = your everyday coffee.
GOAT-15 SBR = the bold latte.
And the GOAT-15 Pistol?
Cold brew.
Compact. Cool. A little edgy. Not here to waste time.

****msCommunity

06/17/2026

📣 Ladies and gentlemen 📣
I present to you, the lightest semi-automatic rifle in the world:

✨ THE GOAT-15 ✨

Have you checked it out yet??

06/15/2026

🚨Looking for something different to add to your collection?
The GOAT-15 isn't just another AR-style firearm. It's built for fun, designed for versatility, and packed with features you may or may not be familiar with:
✔️ 20% smaller than a standard AR-15
✔️ Patented tamper-resistant safety
✔️ Threaded barrel for suppressor compatibility
✔️ Standard Picatinny rail for your favorite accessories
✔️ Lightweight, reliable, and ridiculously fun to shoot
Watch the video to see all 5 reasons why the GOAT-15 has become a favorite among plinkers, trainers, and first-time shooters alike.

****ms

What does your weekend look like? 👀You can find us having fun at the range with our GOAT-15s☀️
06/12/2026

What does your weekend look like? 👀
You can find us having fun at the range with our GOAT-15s☀️

06/10/2026

Looking to buy the world's lightest semi-auto rifle??
Here's how to find a list of our dealers both locally and online:

06/08/2026

🐐 Thousands of you have had the chance to and these are the most common reactions:

😮 "Wow this thing is so light"
🔫 "I thought this was a toy"
❤️ "I just know my ________ would love this"
🕺"Man, I could have some fun with this!"

Tell us what your first thoughts were! 👇

06/05/2026

The last 5 rounds didn't make the cut.
During testing, we found that our higher capacity magazine performed best as a 20-round design. Better feeding. Better reliability. Better overall performance.
So rather than chase a bigger number, we chose the better magazine.
That's the GOAT mentality. 🐐
✨20 round magazines start shipping the week of June 22!!✨
****ms

Coffee orders say a lot about a person.So do firearm choices. ☕That got us thinking…Which coffee drink best matches each...
06/03/2026

Coffee orders say a lot about a person.
So do firearm choices. ☕

That got us thinking…
Which coffee drink best matches each GOAT-15 model? 🤔
GOAT-15 SBR = bold like a latte

What do you think the pistol should be? 👇

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Charleston, UT
84032

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