Barrett MK22 Advanced Sniper Kit — .338/.300/7.62×51
About this product
The Barrett MK22 Advanced Sniper Kit in .338/.300/7.62×51 is a factory-direct, modular long-range system that lets a single receiver legally switch between three distinct cartridges, provided you register its shortest 20-inch barrel as a Title II SBR. It's not just a rifle, but a complete, calibrated system built for extreme precision transportability. This is the military-derived package you buy when your mission parameters shift faster than your budget for dedicated rifles.
What is the Barrett MK22 used for?
The MK22 is used for scenarios demanding one receiver that can serve as a .338 Norma magnum anti-material rifle, a .300 Norma magnum extended-range precision rifle, and a 7.62 NATO mid-range workhorse. The multi-caliber design allows a single armorer to maintain proficiency and logistics for three distinct ballistic envelopes. This makes it ideal for specialized private-sector security details, high-end tactical training schools, or the prepared long-range shooter who needs to match capability to terrain and target without buying three separate $15,000+ rifles.
How does the Barrett MK22 compare to the Stevens 334?
The MK22 outperforms a budget bolt-action like our Stevens 334 in .308 Win in every measure of precision, modularity, and terminal ballistics, but it costs roughly 20 times as much. Where the Stevens offers basic .308 functionality off the shelf, the MK22 is a bespoke platform engineered for sub-MOA accuracy at 1,500+ yards with its magnum cartridges. The Stevens is a tool for learning fundamentals; the MK22 is a tool for executing them with definitive authority at combat distances.
What does it weigh and what are the dimensions?
The MK22 kit weighs a total of 37.5 pounds across its three precision-machined barrels, five magazines per caliber (15 total), receiver, and folding stock. The assembled rifle in its 27-inch .338 configuration measures 49.4 inches in overall length, folding down to a 34.8-inch transport package that fits in a pelican case 48 inches long. Each fluted barrel assembly weighs between 3.9 and 4.7 pounds depending on caliber and length, contributing to a 16.2-pound minimum weight for the lightest 7.62 configuration.
Who is this NOT for?
This kit is not for a first-time rifle buyer, someone looking for a simple deer rifle, or anyone unwilling to navigate NFA paperwork. It's an overbuilt, financially significant system where the primary advantage—modularity—requires pre-planning, registration, and specialized optics for each caliber that can easily double the initial investment. If you don't have a structured zeroing and verification process for each barrel, you're leaving its primary capability unused.
What's in the box?
The complete kit includes the receiver, the side-folding stock, one 27-inch .338 Norma Magnum barrel with muzzle brake, one 26-inch .300 Norma Magnum barrel with muzzle brake, one 20-inch 7.62 NATO barrel with muzzle brake, fifteen magazines (five per caliber), and all necessary multi-tool wrenches for barrel swaps. The Coyote Brown Cerakote finish is applied to all major components for consistent camouflage and corrosion resistance, a detail critical for multi-environment use.
Is the Barrett MK22 worth it at $19,142?
It is worth $19,142 only if you require and will train with its specific capability set—if you need the ability to reach out to 1,800 yards with .338 Norma, then reconfigure in 90 seconds for suppressed 7.62 work inside 800 yards. The price buys logistical simplicity and mechanical precision that would otherwise require multiple custom rifles. Consider that a purpose-built .338 Lapua rifle of comparable quality can cost $12,000 alone, and the kit's premium for modularity becomes a strategic calculation, not a recreational one.
Specs at a glance
Video review
Pros & cons
What works
- True multi-caliber capability with 3 factory-headspaced barrel assemblies in .338 NM, .300 NM, and 7.62 NATO.
- 37.5 lb total kit weight includes 15 magazines and tools — a complete system ready for deployment.
- Folding stock reduces overall length from 49.4 in to 34.8 in for transport in a standard 48-in case.
- Barrel swap requires only a multi-tool and 90 seconds, enabling rapid mission adaptation.
Trade-offs
- Proprietary stock system prevents use of standard AR-10/M110 aftermarket stocks for customization.
- 20-inch barrel configuration risks creating an NFA-regulated SBR when folded, adding $200 tax and 6-9 month paperwork delay.
- Coyote Brown Cerakote finish shows wear on high-contact surfaces faster than a standard parkerized or nitride finish.
- Kit price of $19,142 excludes optics, suppressor mounts, and case, easily adding $5,000-$10,000 for a functional system.
Expert review
Key attributes
| upc | 810021510989 |
| manufacturer | Barrett Firearms |
| manufacturer part number | 18804 |
| action | Bolt Action |
| atf type | RIFLE |
| barrel length | 26" |
| caliber/gauge | .300 Norma Magnum |
| capacity | 10 + 1 |
| number of magazines | 5 10 rd. |
| package height | 11.0 |
| package width | 19.0 |
| product type | Rifle |
| safety | Ambidextrous |
| shipping weight | 94.8 |
| sights | Optic Ready |
Frequently asked questions
- Does this kit include a suppressor or suppressor-ready muzzle devices?
- No, the kit ships with aggressive, effective radial muzzle brakes threaded 5/8"-24 for the .338 and .300 barrels, and 5/8"-24 or .30-caliber for the 7.62 barrel. For suppressor mounting, you'll need to purchase and install compatible muzzle devices like a Dead Air KeyMo brake or a SilencerCo ASR mount, adding $150-$250 per barrel. Plan for this, as suppressors themselves require separate NFA registration and a 9-12 month ATF wait.
- Is the folding stock compatible with aftermarket AR-style stocks?
- No, the stock interface is a proprietary Barrett hinge and buffer system designed specifically for the MK22's monolithic receiver. You cannot simply swap it for a Magpul CTR or B5 Systems stock. The entire assembly, from its adjustable cheek comb to its QD sling sockets, is integrated. This limits customization but ensures the rigidity and repeatability necessary for consistent long-range accuracy across calibers.
- How difficult is the barrel swap procedure?
- With practice and the provided multi-tool, a barrel swap can be completed in approximately 90 seconds. It requires loosening two large, captured Torx-head bolts on the receiver's front trunnion, removing the barrel assembly headspaced at the factory, and installing the new one, torquing to 65 foot-pounds. This is simpler than most AR-10 barrel swaps, and the system maintains zero well with optics mounted directly to the receiver, though you must re-zero for each caliber.
- Is this considered a National Firearms Act (NFA) item?
- The kit as packaged is not an NFA item—the 20-inch 7.62 barrel makes it Title I legal when installed. However, if you install the 20-inch barrel onto the receiver with the stock folded or removed, creating an overall length under 26 inches, it becomes a Short-Barreled Rifle (SBR) subject to ATF regulation. You must file a Form 1, pay the $200 tax, and receive approval before that configuration is legal to assemble. Plan your purchase with this 6-9 month regulatory timeline in mind.
- What type of optics mounting system does the receiver use?
- The receiver is drilled and tapped with a #8-40 screw pattern compatible with standard 1913 Picatinny rails or direct-mount scope bases. It does not use a Remington 700 footprint. I recommend using a one-piece 20 MOA tapered rail from a manufacturer like Spuhr or American Rifle Company for long-range work. The mounting surface is 8.1 inches long, providing ample room for modern 34mm or 35mm tube tactical scopes with generous eye relief.