Description
The MBGL GOAT-15 ATOM 22 LR Pistol from Mountain Billy Gun Lab is an ultralight, AR-style rimfire pistol that weighs under two pounds. Polymer upper and lower receivers, a 7.8-inch threaded CMV steel barrel and a rear Picatinny rail for a brace make it a packable trail gun, trainer and suppressor host.
MBGL GOAT-15 ATOM 22 LR Pistol Overview
Mountain Billy Gun Lab designed the GOAT-15 family to be as light as possible while keeping familiar AR-15 style ergonomics. The ATOM is the pistol version, measuring about 14.1 inches overall. It is a blowback semi-auto with a patented tamper-resistant safety, a top Picatinny rail with M-LOK slots on the handguard and no factory sights; MBGL recommends a red dot. This is the standard ATOM configuration. Distributor listings rate it as a one-shot capacity package, while the separate HC version is listed at 10+1, so confirm which magazine is in the box.
Built to Carry
At 1 pound 14 ounces unloaded, the ATOM weighs less than many steel-framed handguns. That makes it easy to strap to a pack for hiking, camp or small-game trips. The polymer construction resists weather and does not get as hot or cold to the touch as aluminum, though it will not take the abuse an all-metal receiver can.
Magazine Options
MBGL offers a one-round magazine, a 10-round magazine and a 25-round magazine for the GOAT-15 platform. The one-round mag is useful for new-shooter instruction and for jurisdictions where capacity is restricted. Magazines are proprietary to the GOAT-15, so standard 10/22 or AR 22 conversion magazines will not work.
Brace and Optics
A rear 1913 rail lets you add the pistol brace of your choice. The federal brace rule has been vacated by a court, but the rules have changed more than once, so stay current on federal and state guidance. A small red dot on the top rail is the fastest way to shoot this pistol well.
Suppressor Host
The 1/2-28 threaded barrel accepts most rimfire suppressors, and with standard-velocity ammunition a suppressed 22 LR pistol of this size is very quiet. Suppressors are NFA items requiring an approved ATF Form 4 and state legality. Rimfire cans foul quickly and need regular cleaning.
Caveats
A very light blowback 22 can be pickier about ammunition than a heavier rifle, so test a few brands and favor high-velocity loads if you see failures to cycle. The lack of sights means you will need an optic to get the most from it. Holster and accessory support is limited for such a new design.
State Laws and Ownership
Pennsylvania buyers complete a PICS check at the receiving dealer and AR-style rimfire pistols are legal in the state. Some states restrict pistols with threaded barrels or magazines outside the grip, even in 22 LR, and a few cap magazine capacity. Check your state and local rules before ordering.
Specifications
- Model: GOAT-15 ATOM pistol, standard configuration
- UPC: 850022225505
- Manufacturer: Mountain Billy Gun Lab (MBGL), made in the USA
- Caliber: 22 LR
- Action: Blowback semi-auto
- Barrel: 7.8-inch CMV steel, black oxide, 1:16 RH twist, threaded 1/2-28
- Overall length: about 14.1 in.
- Weight: 1 lb 14 oz unloaded
- Receivers: Polymer upper and lower
- Rails: Top Picatinny, M-LOK handguard, rear 1913 rail for a brace
- Safety: Patented tamper-resistant
- Sights: None (red dot recommended)
Before You Buy
Federal law requires handgun buyers to be at least 21 years old to purchase from a licensed dealer and to pass a background check. This pistol ships to your local FFL, where you complete ATF Form 4473. Suppressors are regulated separately under the NFA.
Who It Is For
The MBGL GOAT-15 ATOM 22 LR Pistol is a great fit for hikers and campers who want the lightest possible 22, new-shooter instructors who like the one-round option, and rimfire suppressor owners looking for a compact host.
Buy the MBGL GOAT-15 ATOM 22 LR Pistol at MAG5 Firearms
MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the MBGL GOAT-15 ATOM 22 LR Pistol online and ship it to your local FFL dealer, or browse our full selection of firearms for more pistols. For factory details, visit Mountain Billy Gun Lab.
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