Product Review: GOAT-15 Helium .22LR Rifle

In previous posts I've talked about gun safety and properly introducing children to firearms. Both topics are intertwined with using the right tools: firearms that are not only functionally safe, but also of appropriate size and weight for smaller shooters.

While attending the GOA GOALS Expo last year, I got to meet Caelinn, Alex, and Braxton of Mountain Billy Gun Labs. They were more than willing to spend some time talking about their product with me. In the short time I was able to handle this firearm, I was quite intrigued.

Following the expo I reached out to them about getting one of their .22 long rifle GOAT-15 Helium mini AR-15s for testing and evaluation. After the usual communications and assurances, they sent one to my local FFL.

Caelin, Alex, and Braxton at GOA GOALS

Description and Specifications

The GOAT-15 is 28 inches long with the stock collapsed and 31 inches long with the stock fully extended. 

Size comparison

The buffer tube has seven positions, enabling it to fit a variety of shooters.

Smaller, but traditional AR-style stock adjustments

The 16" barrel is rifled 1 turn in 16 with a right hand twist. The muzzle is threaded with standard 1/2-28 threads and comes with a thread protector for when another muzzle attachment isn't in use.

The rifle weighs a featherlight 2.75 pounds unloaded. Adding a Swampfox Liberator green dot optic increases that weight to only 3.2 pounds.

Weight with and without optic

Mountain Billy Gun labs contracted with MagPul on the one piece upper receiver and hand guard. The fore end has standard M-Lok slots for accessory attachment on the sides and bottom, and a full length Picatinny rail on top.

M-Lok handguard with Picatinny rail

The GOAT-15 comes with two magazines, one that holds a single round for training purposes and another that holds five. Ten round magazines are now available as well. If the GOAT-15 product line takes off like I hope it does, maybe Pro-Mag will make a drum for it.

Five round and single round magazines

Other than the M-Lok slots, Picatinny rail, and muzzle threads, no parts on the GOAT-15 are interchangeable with standard AR-pattern rifles or accessories. All other parts are proprietary.

In accordance with BATFE regulations, the serial number is located on a metal plate inset into the right side of the magazine well.

The full Billy

Handling and Shooting

The GOAT-15 Helium is on the compact side for me, but it's a good fit for smaller-statured shooters. My 5'2" tall wife and a 5' tall friend were both comfortable shouldering the rifle with the stock fully extended. Two taller friends and I found that it required a somewhat cramped hold, but we were able to manage with no real issues.

All controls are of the standard and familiar AR pattern, with one exception:  the safety lock, a unique feature of this rifle.

From their website:

Safety was so important, we developed and patented a new tamper resistant safety switch that requires strength and dexterity to release, adding a level of safety found on no other firearm, of any size.

The safety lock is a knurled knob on the right side of the receiver where the boss of the safety lever cross pin is located. In normal use, it can be completely ignored and doesn't interfere with operation of the safety lever in any way. To activate, the knob is pulled out slightly and rotated 180 degrees. This locks the safety in the safe position, rendering the rifle inoperative until the knob is rotated back. If desired, the safety lock can be removed. 

GOAT-15 Lower Receiver

When I talked with Caelinn, Alex, and Braxton at the GOALS Expo, they mentioned the future possibility of a safety lever that could be put in place of the safety lock. This would allow for full ambidextrous operation of the safety. However, that's not a priority at the moment. 

If I were to describe my experience shooting the GOAT-15, the first word that comes to mind is fun. 22s are nearly always fun to shoot, and the GOAT-15 takes that to the next level. It's small and light, while still maintaining the negligible recoil of a 22. It's also quite accurate: shooting from ten yards freehand, anything other than one-hole five-shot groups were the exception.

Shell casings ejected in the four o'clock direction and landed about 10 feet away in a relatively contained area. When the last round is fired, the bolt locks open as with any standard AR platform firearm.

The only issue encountered was on the second day of shooting. We were several hundred rounds in, and the rifle suffered a series of failures to feed. As many people know, 22 rimfire is pretty dirty ammo, and firearm function being affected by a build-up from the externally lubricated bullets and combustion residue is not uncommon. An examination of the rifle revealed a ridge of gunk had accumulated on the feed ramp; a quick scrub with a nylon bristle brush through the ejection port cleared this up and we were back in business.

The rifle was tested with Federal and Winchester 36 grain copper plated hollow points, as well as a mix-and-match of other brands from my leftovers bin. Other than the fouling issue I just mentioned, the GOAT-15 handled them all without a hiccup.

For amusement value, a few of the testers tried shooting it like a pistol, with a one- or two-hand grip. Although a bit muzzle-heavy when shot in this manner, it was manageable, but group size suffered as would be expected.

A passable but unwieldy handgun

Internals

Disassembling the GOAT-15 for cleaning or maintenance is only slightly different from standard AR-patter rifles. While the upper and lower are still connected by takedown and pivot pins, they're not retained by detents. They're also not pushout, instead having a hex socket on one side and a flat slot on the other, which necessitates two tools to unscrew one end of the pin from the other. This process takes a little getting used to, but it isn't complicated. I do recommend securing the rifle before attempting disassembly.

After the pins are removed and the receiver halves separated, remaining teardown is consistent with most ARs. The bolt and charging handle slide out the back of the upper receiver, and that's it. The rifle is field stripped.

Bolt and Charging Handle

When I looked down into the fire control pocket, I would have believed I was seeing a standard AR if I didn't have a sense of scale.

All the internal components look like what we expect to see, just smaller.

Fire Control Group, Hammer up and Down

Packing and Accessories

The GOAT-15 Helium comes packed with foam spacers in a sturdy cardboard box. In addition to the rifle, it also contains two magazines (one-round, and five-round), the federally mandated lock, a manual, and a sticker.

The GOAT-15 in its pen

The MSRP of the GOAT-15 Helium is $470 for the rifle and $23 for the 10-round magazines. In my opinion, this is a remarkably good price.

Mountain Billy has also recently released the ATOM pistol and H2 SBR versions of the GOAT-15, at MSRPs of $480 and $490 respectively. The SBR price does not include the $200 National Firearms Act tax stamp fee.

Summary

At the end of the T&E period, I was so impressed with the GOAT-15 Helium that I talked to Mountain Billy Gun Labs about purchasing their test rifle. They agreed, so I'm now the keeper of this lovely firearm. I foresee it getting plenty of use, both by me and by every friend whose hands I can get it into.

Whether for training new shooters, outfitting a smaller statured shooter, or just as a fun plinker, I highly recommend any of the GOAT-15 variants.

As you might guess, I give it a ten out of ten.

Have fun, and safe shooting.