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Multi-caliber, modular pistols and rifles seem to be all the range nowadays, so it should come as no surprise that another company has come up with their own line of brand-new multi-caliber, modular firearms – but this time it’s bolt-action rifles. SKAT, a Russian arms manufacturer founded by one Gennadiy Kozhayev, has introduced its new modular precision bolt-action rifle (one in “regular” and the other in bullpup design), the GM-200. SKAT’s rather extensive product line includes Glock clones in 9mm and .22 LR, along with some AR-15 parts, and their own bolt-action rifles apart from their new GM-200. Kozhayev is also the head honcho of Russia’s National Federation of Benchrest and Varminting, which probably explains his company’s passion for precision shooting, and why the GM-200 is well-designed. The rifles don’t seem to be mass-produced; rather, they can be purchased on a “by-order” basis only.

The GM-200

To change the caliber, and thus lending itself to a high level of modularity, the GM-200 allows users to change out its barrel, bolt head and magazine. The rifle is comprised of an upper and lower receiver, and they’re linked to each other with three main screws; one is under the trigger guard, and the other two screws are behind and in front of the mag well. Two of these main screws also secure the barrel to the lower receiver. All three screws must be loosened to detach the barrel. Judging by the appearance of the rifle, it seems to be made from carbon fiber or a metal alloy, or a combination of both. The handguard appears to be a separate piece from the upper receiver. Picatinny rails line the top of the rifle, and the barrel is a free-floating type. Keymod rails run along the length of the stock, and the free-floating handguard. The rifle comes standard with an AR-15 pistol grip.

CG mockup of GM-200 Modular bolt-action rifle. There aren’t many pictures
or live demos of this rifle, as they’re made-to-order.
(TheFirearmBlog.com/blog/2018/04/24/skat-gm-200-and-prototype-bullpup-modular-bolt-action-rifles/).

 

The GM-200’s floating barrel allows for greater accuracy
(TheFirearmBlog.com/blog/2018/04/24/skat-gm-200-and-prototype-bullpup-modular-bolt-action-rifles/).

The bolt

The GM-200’s bolt will be available in steel or carbon fiber. This results in a lighter build, but it’s unknown whether a carbon-fiber bolt option is to allow also for a smoother operation, as this lessens the friction of the bolt on the rifle’s inner workings. The bolt is a three-lug type, with its handle throw angled at 60 degrees. Changing the bolt is also necessary when switching the rifle to a different caliber. The process is as simple as disassembling the bolt, removing the bolt head’s retaining pin, removing the bolt head and replacing it with the corresponding bolt head of the switched caliber, then reassembling the bolt.

The rifle’s bolt assembly. Note the carbon-fiber body of the bolt
(TheFirearmBlog.com/blog/2018/04/24/skat-gm-200-and-prototype-bullpup-modular-bolt-action-rifles/).

Available calibers

The modularity and versatility of the GM-200 is evidenced by its wide array of calibers. It can be chambered in 6.5x47mm Lapua, .308 Winchester, .270 WSM, 7.62x54mmR, and even .338 Lapua Magnum. More calibers are slated to be made available later on. The rifle is fed via proprietary double-stack, single-feed steel magazines.

From left to right, these are some of the many calibers that the rifle can be chambered in: .338 Lapua Magnum, .270 WSM, .308 Winchester and 7.62x54mmR, which is actually fed via a Vepr magazine fitted with a specially-designed adapter (TheFirearmBlog.com/blog/2018/04/24/skat-gm-200-and-prototype-bullpup-modular-bolt-action-rifles/).

Increased modularity

SKAT not only designed the rifle to be interchangeable with different calibers, but also with some parts of different weapon systems. A demonstration of this is how this shorter-barreled GM-200 may be combined with an AR-15 pistol grip and stock, and the trigger mechanism from a Remington 700:

A “Frankengun” GM-200 (TheFirearmBlog.com/blog/2018/04/24/skat-gm-200-and-prototype-bullpup-modular-bolt-action-rifles/).

The Bullpup version

The GM-200 can also be ordered in a Bullpup configuration, although it hasn’t yet passed completely from prototype to mass production stage. Very little information on this version is available, but it’s purely based on the “regular” GM-200 and has the same action. A short- and long-barreled Bullpup will be available, chambered in .375 Chey Tac, .408 Chey Tac or .50 BMG. Prices and release dates are yet to be determined by the manufacturer.

Short-barreled Bullpup prototype (TheFirearmBlog.com/blog/2018/04/24/skat-gm-200-and-prototype-bullpup-modular-bolt-action-rifles/).

Long-barreled Bullpup prototype
(TheFirearmBlog.com/blog/2018/04/24/skat-gm-200-and-prototype-bullpup-modular-bolt-action-rifles/).