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The CheyTac M200 Intervention is a manually operated, rotating bolt rifle. The retractable stock allows for adjustment of the length of pull, and can be fully collapsed for storage and transportation. The barrel can be quickly removed for replacement, or storage and transportation. The butt contains an integral rear monopod, which is hinged, and can be folded up when not in use. The heavy, fluted barrel is free floated, and its rear part is enclosed by tubular shroud, which serves as a mount for integral folding bipod and carrying handle. Barrel is provided with effective muzzle brake, which can be replaced with OPSINC suppressor (silencer). The M200 rifle is fed using detachable single stack magazines, which hold 7 rounds. Top of receiver is fitted with permanent MilStd Picatinny rail. The standard scope is Nightforce NXS 5.5-22X, which can be upgraded with AN/PVS-14 Night Vision module and AN/PEQ-2 IR laser. No iron sights are provided with the M200 rifle.
The entire idea behind the CheyTac LRRS (Long Range Rifle System) is to provide long range, soft target interdiction (read: anti-personnel sniper) rifle package, with maximum effective range, but relatively compact and light. To achieve this goal, the professor John D. Taylor designed the .408 CheyTac cartridge. Being mid-way in size between the mighty .50 BMG and already established long-range favorite .338 Lapua, the .408 features a streamlined bullet with advanced patented design. This design allows the standard 419 grain (27.15 gram) bullet to retain its supersonic velocity at the ranges beyond 2000 meters (2200 yards). At the ranges beyond 700 meters the .408 bullet has more energy than the standard .50 BMG ball bullet. The .408 cartridge is also lighter than the .50 BMG cartridge by about 1/3, and generates less recoil.
The original CheyTac Intervention M100 rifle is based on the Windrunner .50 caliber takedown rifle from EDM Arms. Current Intervention M200 sniper rifles still are based on Windrunner design, but with several modifications. The Long Range Rifle System also includes CheyTac tactical computer (commercial PDA with CheyTac ballistic software), Nightforce NXS 5.5-22X scope, and Kestrel 4000 wind/temperature/atmospheric pressure sensors, linked to the PDA. The Tactical Computer with sensors and internal ballistic database provides all necessary data for long range fire. CheyTac papers state that the entire System is capable to deliver sub-MOA accuracy at the ranges of up to 2500 yards (2270 meters).