CM7S .375 Raptor Barreled Action with PLACID OTB Suppressor 12.5″

CM7S .375 Raptor Barreled Action with PLACID OTB Suppressor

The CM7S .375 Raptor Barreled Action with PLACID OTB combines the hard-hitting performance of the .375 Raptor cartridge with the compact CM7S bolt-action platform and an integrated titanium over-the-barrel suppression system.

Designed specifically for the CM7S, the PLACID OTB suppressor is more than a conventional suppressor attached to the muzzle. It is a purpose-built reflex suppression system engineered around the barreled action, using the space surrounding the barrel as an active part of the suppressor.

For shooters looking to build a suppressed .375 Raptor bolt-action rifle, this system provides a complete foundation with the barrel, action and suppression system engineered to function together.

Purpose-Built .375 Raptor Barreled Action

The .375 Raptor is particularly well suited to suppressed bolt-action applications. Its ability to use heavy .375-caliber projectiles makes it an excellent choice for shooters seeking substantial terminal performance from subsonic ammunition.

The CM7S provides a compact bolt-action platform designed around cartridges like the .375 Raptor, while the PLACID OTB adds an integrated suppression system without relying on a traditional muzzle-mounted suppressor configuration.

The result is a purpose-built .375 Raptor suppressed barreled action designed around the cartridge from the beginning.

Integrated PLACID OTB Suppression System

The PLACID OTB uses a proprietary CM7S barrel nut with 1.375×24 HUB outer threads to integrate the suppressor with the barreled action.

A 12.5-inch titanium reflex tube attaches at the action and extends forward over the barrel. At the muzzle, a 6-inch 3D-printed titanium baffle stack indexes against a taper mount and threads into the outer reflex tube.

Rather than allowing the space surrounding the barrel to remain unused, the PLACID OTB is engineered to direct expanding gases rearward into the large-volume reflex chamber.

This makes the entire over-the-barrel section an active part of the suppression system.

All-Titanium Construction

The complete PLACID OTB system is manufactured from titanium, including the reflex tube and 3D-printed baffle stack.

The complete suppressor system measures 18.25 inches long, has a 1.5-inch diameter, and weighs just 23.6 ounces.

Combined with the CM7S, the complete .375 Raptor barreled action with PLACID OTB weighs 4 lb 15.7 oz.

CM7S .375 Raptor with PLACID OTB Features

• CM7S bolt-action platform
• Chambered in .375 Raptor
• Purpose-built for suppressed applications
• Integrated PLACID OTB over-the-barrel suppressor
• All-titanium suppressor construction
• 12.5″ titanium reflex tube
• 6″ 3D-printed titanium baffle stack
• Active large-volume reflex suppression chamber
• Taper-indexed muzzle interface
• Proprietary CM7S barrel nut
• 1.375×24 HUB barrel-nut interface
• 18.25″ PLACID OTB overall length
• 1.5″ suppressor diameter
• 23.6 oz PLACID OTB weight
• 4 lb 15.7 oz complete barreled action with PLACID OTB

A Suppressed .375 Raptor System Built as a System

The CM7S .375 Raptor Barreled Action with PLACID OTB takes a different approach to suppressed rifle design.

Instead of building the rifle first and attaching a suppressor afterward, the CM7S and PLACID OTB are engineered to work together. The over-the-barrel architecture provides substantial internal volume while the titanium baffle stack and active reflex chamber manage expanding gases throughout the complete suppressor assembly.

For shooters building a compact .375 Raptor bolt-action rifle for suppressed and subsonic use, the CM7S with PLACID OTB provides an integrated starting point engineered specifically for that role.

PLACID OTB — Over-the-barrel suppression engineered around the CM7S.

Frequently Asked Questions

What is the CM7S .375 Raptor Barreled Action with PLACID OTB?

The CM7S .375 Raptor Barreled Action with PLACID OTB is an integrated bolt-action barreled action and over-the-barrel suppression system. The PLACID OTB was engineered specifically around the CM7S rather than being designed as a conventional muzzle-mounted suppressor.

What is the PLACID OTB?

The PLACID OTB is a purpose-built over-the-barrel, or reflex, suppressor system designed for the CM7S. It combines a 12.5-inch titanium reflex tube with a 6-inch 3D-printed titanium baffle stack to create an integrated suppression system around the barreled action.

How does the PLACID OTB suppressor work?

The PLACID OTB uses a forward titanium baffle stack and a large reflex chamber surrounding the barrel. The system is specifically designed to vent expanding gases rearward into the reflex tube, making the volume surrounding the barrel an active part of the suppression system.

Is the PLACID OTB a conventional muzzle-mounted suppressor?

No. Unlike a conventional suppressor that simply threads onto the muzzle, the PLACID OTB integrates with the CM7S barreled action. A proprietary CM7S barrel nut provides the mounting interface for the titanium reflex tube, while the baffle stack indexes at the muzzle.

Is the PLACID OTB made from titanium?

Yes. The PLACID OTB features all-titanium construction, including the 12.5-inch reflex tube and 3D-printed titanium baffle stack.

How long is the PLACID OTB?

The complete PLACID OTB suppression system measures 18.25 inches overall and has a 1.5-inch diameter.

How much does the PLACID OTB weigh?

The complete PLACID OTB system weighs 23.6 ounces.

How much does the CM7S .375 Raptor Barreled Action with PLACID OTB weigh?

The complete CM7S .375 Raptor Barreled Action with PLACID OTB weighs 4 lb 15.7 oz.

Is .375 Raptor suitable for suppressed and subsonic use?

Yes. The .375 Raptor is well suited to suppressed bolt-action applications and can utilize heavy .375-caliber projectiles at subsonic velocities. The CM7S and PLACID OTB combination is specifically oriented toward this type of suppressed application.

What is the mounting interface for the PLACID OTB?

The system uses a proprietary CM7S barrel nut with 1.375×24 HUB outer threads. The baffle stack indexes against a taper mount at the muzzle and incorporates external 1.375×24 HUB threads to interface with the outer reflex tube.

Is the PLACID OTB designed specifically for the CM7S?

Yes. The PLACID OTB was engineered around the Chattahoochee Munitions CM7S platform. The suppressor, barrel interface, reflex chamber and muzzle-mounted baffle assembly are designed to operate as an integrated system.

Why use an over-the-barrel suppressor design?

An over-the-barrel design allows a significant portion of the suppressor’s internal volume to extend rearward around the barrel. With the PLACID OTB, that reflex volume is actively used to manage expanding gases rather than simply serving as an outer housing.

Is the PLACID OTB an NFA-regulated suppressor?

Yes. The PLACID OTB is a firearm suppressor and is subject to applicable federal, state and local laws and regulations. Purchasers are responsible for complying with all requirements applicable to suppressor possession and transfer in their jurisdiction.