Mountain Billy Gun Lab

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

09/09/2026

Get to know one of our owners - Heidi Schaefer 🐐
She's not shown on here as much as her brother Eric, but she's a busy woman!
She prefers the GOAT-15 Helium. Which of our lightweight fi****ms do YOU prefer? 👇

09/05/2026

Who is spending some time at the range this Labor Day weekend?!
Don't forget to bring the GOAT 🐐

09/02/2026

🚨 Don't just take our word for it. We see your comments and DMs everyday loving the new 20 round magazines!

08/31/2026

A glimpse behind the scenes of our lab making the GOAT-15 🐐

In case you're new here, we're Mountain Billy Gun Lab and we make the world's lightest semi auto r***e that's the perfect training gun, plinking gun, and all around fun gun to shoot. Check out our r***e, SBR and pistol 🔫

🚨 20 round mags are ready for you!! 🚨

08/27/2026

Okay fam - how well do you know the GOAT-15? Do you know what makes it different from a standard AR-15? 👇

****ms

08/25/2026

THE G.O.A.T. when it comes to lightweight fi****ms 🐐

3 reasons you should NOT buy the GOAT-15. 👀1️⃣ Everyone at the range is going to ask about it.2️⃣ You're going to get st...
08/21/2026

3 reasons you should NOT buy the GOAT-15. 👀

1️⃣ Everyone at the range is going to ask about it.
2️⃣ You're going to get stopped mid-reload by someone wanting to see it.
3️⃣ Your buddies are going to want to shoot it more than their own gun.

The lightest semi-auto on the market tends to draw a crowd. 🐐

Still not convinced? Link in bio.

08/19/2026

🚨 Did you know this about the GOAT15 lineup?!

We might be smaller, but you can still throw on your favorite suppressor (even if it's ours) - stay tuned!

🏁 Point. Shoot. Send it. 🏎️Mountain Billy is now a proud sponsor of dirt model racing team called 3 Sisters Farm Racing!
08/17/2026

🏁 Point. Shoot. Send it. 🏎️

Mountain Billy is now a proud sponsor of dirt model racing team called 3 Sisters Farm Racing!

08/13/2026

🙏 We hoped you're as thrilled about this news as we are! It might have taken us a little bit longer than anticipated, but it was extremely worth it to be to offer a highly reliable higher capacity magazine.

Can't wait to hear about how much more fun it is! 🐐

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Charleston, UT
84032

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