The CM7S 22 ARC Short Barreled Action pairs the Chattahoochee Munitions CM7S action with a compact 12.5-inch MÔS-Tek 22 ARC barrel. It provides the core mechanical system for customers who want to configure a compact bolt-action 22 ARC firearm around their preferred compatible chassis, trigger, magazine system, optic, and other components.
The CM7S uses a Remington 700 footprint with a three-lug bolt and 60-degree bolt throw. The 12.5-inch MÔS-Tek barrel is manufactured from 416R stainless steel with 5R rifling, a 1:8 twist, shouldered crown, 1/2×28 muzzle threads, and E100 Blackout Cerakote finish.
At 57.4 oz. / 3.59 lb., the complete barreled action provides a compact starting point for a short 22 ARC configuration while retaining the same CM7S action architecture used throughout the CM bolt-action family.
CM7S 22 ARC Short Barreled Action
The CM7S is Chattahoochee Munitions’ bolt-action platform. Its Remington 700 footprint provides compatibility with an established ecosystem of appropriately configured chassis and trigger systems, while the action itself incorporates CM-specific features including a three-lug bolt, 60-degree throw, integrated recoil lug, pinned 20 MOA optics rail, and M16-style extractor.
The action body and bolt receive a full PVD coating for corrosion resistance and a low-friction operating surface.
CM7S Action Specifications
- Footprint: Remington 700
- Bolt design: Three lug
- Bolt throw: 60 degrees
- Extractor: M16 style
- Bolt: One piece
- Bolt body diameter: .718″
- Bolt finish: PVD
- Bolt configuration: Spiral fluted
- Bolt knob: Oversized
- Raceways: Wire EDM
- Recoil lug: Integrated
- Optics rail: Pinned 20 MOA Picatinny
- Ejection port: Large-format opening
- Firing pin: .062″
- Fire control: Tool-less removal
- Trigger compatibility: Remington 700-pattern triggers
- Trigger pins: Included
- Barrel thread: 1-1/16″-16
- Bolt stop: Side release
- Action weight: 25 oz.
- Action finish: Full PVD
12.5-Inch MÔS-Tek 22 ARC Barrel
The 22 ARC Short Barreled Action uses a 12.5-inch MÔS-Tek barrel manufactured from 416R stainless steel with 5R rifling and a 1:8 twist rate. The barrel is finished in E100 Blackout Cerakote and incorporates a shouldered crown and 1/2×28 muzzle threads.
Chattahoochee Munitions uses MÔS-Tek bolt-action precision barrels for the CM7S platform. CM7S 22 ARC barrels use the 1:8 twist specification, while CM’s semi-automatic CM15 22 ARC platform uses 1:7 twist barrels.
12.5-Inch Barrel Specifications
- Manufacturer: MÔS-Tek
- Chambering: 22 ARC
- Length: 12.5″
- Material: 416R stainless steel
- Rifling: 5R
- Twist: 1:8
- Crown: Shouldered
- Muzzle threads: 1/2×28
- Finish: E100 Blackout Cerakote
Why Choose a 22 ARC Short Barreled Action?
The 12.5-inch 22 ARC Short Barreled Action is intended for customers who prioritize a shorter overall firearm and want to select the remaining components themselves. Compared with the 18-inch CM7S barreled action, the shorter barrel reduces both overall length and weight at the core of the firearm.
The barreled-action format also avoids purchasing a complete chassis, trigger, and magazine system that the customer may intend to replace. Instead, the CM7S action and chambered barrel are supplied as the central mechanical assembly around which the remaining configuration can be selected.
Customers who prefer a factory-complete compact CM7S can explore the complete 12.5-inch configurations through Flight Deck 22.
Remington 700 Footprint
The CM7S uses the established Remington 700 footprint, allowing the barreled action to interface with compatible chassis and trigger systems designed around the R700 architecture.
Footprint compatibility does not guarantee compatibility with every individual third-party component. Chassis inlet, magazine architecture, bottom-metal requirements, trigger selection, fasteners, and other component dimensions should be verified when configuring the finished firearm.
Three-Lug Bolt and 60-Degree Throw
The CM7S uses a three-lug bolt architecture with a 60-degree bolt throw. The shorter rotation reduces bolt-handle travel during operation compared with traditional two-lug, 90-degree bolt actions.
The one-piece bolt has a .718-inch body diameter and incorporates spiral fluting, an oversized bolt knob, and an M16-style extractor. The action uses wire EDM raceways for controlled manufacturing tolerances and consistent bolt travel.
Integrated Recoil Lug and Pinned 20 MOA Rail
The CM7S incorporates an integrated recoil lug as part of the action architecture. There is no separate or dual-pinned recoil lug in the CM7S system.
A pinned 20 MOA Picatinny rail provides the optics mounting interface and additional elevation for optics requiring greater adjustment range at extended distances.
Remington 700 Trigger Compatibility
The 22 ARC Short Barreled Action accepts Remington 700-pattern triggers and includes the required trigger pins. This allows customers to select the trigger appropriate for their intended configuration.
Chattahoochee Munitions uses TriggerTech triggers in its complete CM7S firearms. Customers who want to retain that configuration can pair the barreled action with the TriggerTech R700 Primary.
22 ARC AICS Magazine System
When configuring a complete firearm around the CM7S 22 ARC Short Barreled Action, the selected chassis and magazine system must both support the intended configuration.
Chattahoochee Munitions uses a vetted AICS-pattern magazine in its complete CM7S 22 ARC firearms. The 22 ARC AICS Magazine is available separately for customers using a compatible magazine system.
Magazine fit and feeding can vary with third-party chassis and bottom-metal combinations. CM’s magazine validation applies to the magazine as configured in complete CM7S firearms with the CM7 chassis.
Suppressing the 12.5-Inch CM7S
The compact 12.5-inch barrel and 1/2×28 muzzle threads make suppressor use a natural consideration for this configuration. Because the CM7S is manually operated, the firearm does not depend on propellant gas to cycle the action.
For the CM7S, Chattahoochee Munitions generally favors a conventional enclosed suppressor. Unlike the semi-automatic CM15, increased suppressor backpressure does not need to be managed to maintain gas-system cycling.
Flight Deck 22 is built around supersonic 22 ARC performance. A suppressor can substantially reduce muzzle blast, but it cannot eliminate the ballistic crack produced by a projectile traveling above the speed of sound.
12.5-Inch CM7S Short Barreled Action Specifications
- Product: CM7S 22 ARC Short Barreled Action
- Chambering: 22 ARC
- Operation: Bolt action
- Footprint: Remington 700
- Bolt: Three lug, one piece
- Bolt body diameter: .718″
- Bolt throw: 60 degrees
- Extractor: M16 style
- Firing pin: .062″
- Recoil lug: Integrated
- Optics rail: Pinned 20 MOA Picatinny
- Action finish: Full PVD
- Action weight: 25 oz.
- Barrel manufacturer: MÔS-Tek
- Barrel: 12.5″ 416R stainless steel
- Rifling: 5R
- Twist: 1:8
- Barrel finish: E100 Blackout Cerakote
- Crown: Shouldered
- Muzzle threads: 1/2×28
- Complete barreled-action weight: 57.4 oz. / 3.59 lb.
Part of Flight Deck 22
The 12.5-inch 22 ARC Short Barreled Action is the compact barreled-action option within Flight Deck 22.
Customers who prefer additional barrel length can choose the 18-inch CM7S 22 ARC barreled action. Flight Deck 22 also includes complete CM7S firearms, CM15 semi-automatic rifles, a 16-inch CM15 upper, and dedicated magazine options for both platforms.
For a deeper comparison of the CM7S and CM15 platforms, barrel lengths, applications, and suppression considerations, read the 22 ARC Rifle Guide.
22 ARC Short Barreled Action FAQ
What is a 22 ARC Short Barreled Action?
A 22 ARC Short Barreled Action combines the bolt action and a short chambered barrel into the core mechanical assembly around which a complete firearm can be configured. This CM7S version pairs the Remington 700-footprint CM7S action with a 12.5-inch MÔS-Tek 22 ARC barrel.
What barrel does the 12.5-inch CM7S use?
The CM7S uses a 12.5-inch MÔS-Tek 416R stainless steel barrel with 5R rifling, a 1:8 twist, E100 Blackout Cerakote finish, shouldered crown, and 1/2×28 muzzle threads.
What twist rate does the CM7S 22 ARC barrel use?
CM7S 22 ARC barrels use a 1:8 twist rate. The semi-automatic CM15 22 ARC platform uses 1:7 twist barrels.
Does the CM7S use an integrated recoil lug?
Yes. The CM7S action has an integrated recoil lug. The 20 MOA Picatinny optics rail is pinned to the action.
What triggers fit the CM7S?
The CM7S accepts Remington 700-pattern triggers and includes trigger pins. Chattahoochee Munitions uses the TriggerTech R700 Primary in complete CM7S firearms.
What magazine does CM use with the CM7S 22 ARC?
CM uses a vetted AICS-pattern magazine in complete CM7S 22 ARC firearms. The 22 ARC AICS Magazine is available separately.
Is the 12.5-inch CM7S suitable for suppressed use?
Yes. The barrel has 1/2×28 muzzle threads, and the manually operated CM7S does not require a gas system to cycle. CM generally favors a conventional enclosed suppressor for the bolt-action platform.
How does the 12.5-inch barreled action differ from the 18-inch version?
The primary difference is barrel length and resulting overall weight. The 12.5-inch 22 ARC Short Barreled Action weighs 57.4 oz. / 3.59 lb., while the 18-inch version provides additional barrel length. Both use the CM7S Remington 700-footprint action and a 1:8 twist MÔS-Tek 22 ARC barrel.
Where can I compare the 12.5-inch and 18-inch CM7S configurations?
Visit Flight Deck 22 to explore the complete product family, or read the 22 ARC Rifle Guide for additional platform and barrel-length information.
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