CM7S 375 Raptor Suppressed SBR with PLACID OTB
The CM7S 375 Raptor Suppressed SBR combines a 12.5-inch fast-twist 375 Raptor barrel with the purpose-built PLACID OTB titanium reflex suppression system. By positioning substantial suppressor volume rearward around the barrel, PLACID OTB creates a compact suppressed bolt-action platform without placing the entire suppressor system beyond the muzzle.
Finished in Black Tungsten with Black furniture, this 375 Raptor Suppressed SBR emphasizes compact dimensions, suppressed performance and adjustability. The CM7S action, 12.5-inch Mos-Tek barrel and PLACID OTB are brought together as a complete system for shooters who want the capabilities of 375 Raptor in a compact suppressed hunting platform.
Compact 375 Raptor Suppressed SBR
The short-barreled configuration is central to the design of this 375 Raptor Suppressed SBR. The 12.5-inch barrel keeps the core firearm compact, while the reflex architecture of PLACID OTB places substantial suppression volume around the barrel rather than adding the entire system forward of the muzzle.
The complete firearm measures 31.00 to 38.625 inches depending on stock adjustment and weighs 7 lb 13.6 oz with PLACID OTB installed. Length of pull adjusts from 6.0 to 13.5 inches.
PLACID OTB Titanium Reflex Suppression
PLACID OTB was designed and developed by Chattahoochee Munitions around the CM7S platform rather than simply adapted to it. This allows the 375 Raptor Suppressed SBR to incorporate substantial suppression volume around its full-length barrel while maintaining compact overall dimensions.
A 12.5-inch titanium reflex tube extends rearward over the barrel while a 6-inch 3D-printed titanium baffle stack occupies the forward section of the system. Unlike a conventional suppressor positioned entirely beyond the muzzle, this architecture allows PLACID OTB to integrate closely with the CM7S while retaining a full-length, unported 12.5-inch barrel.
The complete PLACID OTB system is constructed from titanium, measures 18.25 inches long and 1.5 inches in diameter, and weighs 23.6 ounces. Its mounting, alignment and internal architecture are proprietary to the Chattahoochee Munitions PLACID OTB system.
12.5-Inch 1:7 Twist Mos-Tek Barrel
This 375 Raptor Suppressed SBR uses a full-length, unported 12.5-inch barrel manufactured for Chattahoochee Munitions by Mos-Tek. The fast 1:7 twist rate is particularly well suited to stabilizing the heavy projectiles commonly associated with 375 Raptor use.
- 12.5-inch barrel length
- 416R stainless steel
- 5R rifling
- 1:7 twist rate
- Shouldered crown
- Full-length, unported barrel
- E100 Blackout Cerakote
Full PVD-Coated CM7S Action
The 375 Raptor Suppressed SBR is built around the Chattahoochee Munitions CM7S action. This steel Remington 700-footprint action uses a three-lug design with a short 60-degree bolt throw, providing generous clearance around mounted optics while keeping bolt manipulation quick and efficient.
The one-piece bolt features a .718-inch body, M16-style extractor and spiral fluting. Wire EDM-cut raceways maintain uniform tolerances for smooth cycling, while full PVD coating provides corrosion protection and reduced friction across operating surfaces.
- Remington 700-style footprint
- Full PVD-coated steel action
- Three-lug design
- 60-degree bolt throw
- One-piece .718-inch bolt body
- M16-style extractor
- Wire EDM-cut raceways
- Integrated recoil lug
- Pinned 20 MOA Picatinny rail
- Large ejection port
- Lightweight action body cut-out
- .062-inch firing pin for compatibility with SRP brass
- Tool-less fire control removal
- Side bolt-stop release
- Oversize bolt knob
- Spiral-fluted bolt
- 1-1/16″-16 barrel thread pitch
- 25 oz action weight
TriggerTech Primary Trigger
A TriggerTech Remington 700 Primary trigger is standard on this 375 Raptor Suppressed SBR. The rifle can be ordered with either a flat or curved trigger, with pull weight externally adjustable from approximately 1.5 to 4.0 pounds in 1-ounce increments.
TriggerTech’s Frictionless Release Technology provides a crisp, predictable break with minimal overtravel. Hardened 440C stainless internal components and external CLKR adjustment allow the trigger to be configured for individual shooter preference.
Black Tungsten CM7 Billet Chassis
The 375 Raptor Suppressed SBR uses a Black Tungsten chassis with Black furniture for a subdued appearance appropriate to the compact character of the rifle. More importantly, the CM7 chassis is machined from a single block of billet aluminum to provide a rigid foundation for the action and barrel system.
- Single-piece billet aluminum construction
- Flared AICS-compatible magazine well
- Ambidextrous magazine release
- Full bottom ARCA rail
- M-LOK compatibility
- Dual integrated QD sling sockets
- Large trigger guard for gloved use
- Modular single-bolt stock adapter system
- Telescoping stock
- Adjustable cheek riser
- CM Precision Vertical Crossover Grip developed in collaboration with MK Machining
AICS Magazine Compatibility
The rifle accepts AICS-pattern magazines and includes one 10-round Magpul PMAG 7.62 AC AICS magazine. The chassis incorporates a flared magazine well and ambidextrous release for straightforward magazine changes from either side of the rifle.
Built for Suppressed 375 Raptor Performance
The 375 Raptor Suppressed SBR brings together three characteristics that complement the cartridge: a compact 12.5-inch barrel, fast 1:7 twist and substantial titanium reflex suppressor volume. Instead of treating suppression as an afterthought, the PLACID OTB architecture is integrated into the overall CM7S configuration.
For more information about the cartridge and available platforms, visit the Raptor Paddock. Chattahoochee Munitions also offers 375 Raptor ammunition for shooters looking to pair the rifle with purpose-built ammunition.
CM7S 375 Raptor Suppressed SBR Specifications
- Caliber: 375 Raptor
- Configuration: Short Barreled Rifle
- Barrel Length: 12.5″
- Twist Rate: 1:7
- Barrel: Mos-Tek 416R Stainless, 5R Rifling
- Barrel Finish: E100 Blackout Cerakote
- Suppression System: PLACID OTB
- Suppressor Construction: Titanium
- Reflex Tube: 12.5″ Titanium
- Baffle Stack: 6″ 3D-Printed Titanium
- PLACID OTB Length: 18.25″
- PLACID OTB Diameter: 1.5″
- PLACID OTB Weight: 23.6 oz
- Action: CM7S, Full PVD-Coated Steel
- Recoil Lug: Integrated
- Rail: Pinned 20 MOA Picatinny
- Trigger: TriggerTech Remington 700 Primary, Flat or Curved
- Trigger Adjustment: 1.5–4.0 lb
- Chassis: CM7 Billet Aluminum
- Color: Black Tungsten
- Furniture: Black
- Magazine: 1x 10-Round Magpul PMAG AICS 7.62
- Complete Firearm Weight: 7 lb 13.6 oz
- Overall Length: 31.00″–38.625″
- Length of Pull: 6.0″–13.5″
The weight and dimensions listed above are actual firearm specifications. Weight and dimensions displayed elsewhere for shipping purposes are packaging and shipping measurements.
Frequently Asked Questions
What makes this a 375 Raptor Suppressed SBR?
The CM7S combines a full-length, unported 12.5-inch 375 Raptor barrel with the PLACID OTB titanium reflex suppression system and an adjustable buttstock. The resulting short-barreled rifle is designed as a compact suppressed bolt-action platform.
What makes PLACID OTB different on this 375 Raptor Suppressed SBR?
PLACID OTB was designed and developed by Chattahoochee Munitions around the CM7S platform. Its over-the-barrel architecture places substantial suppressor volume around the full-length 12.5-inch barrel rather than positioning the entire suppressor assembly beyond the muzzle.
How much does the 375 Raptor Suppressed SBR weigh?
The complete firearm weighs 7 lb 13.6 oz with the PLACID OTB installed.
How long is the complete rifle?
Overall length ranges from 31.00 to 38.625 inches depending on stock adjustment. Length of pull adjusts from 6.0 to 13.5 inches.
What trigger comes standard?
A TriggerTech Remington 700 Primary trigger is included. Choose between a flat or curved trigger with externally adjustable pull weight from approximately 1.5 to 4.0 pounds.
Where can I find more information about PLACID OTB?
Visit the dedicated PLACID OTB page for additional information about the system.
Limited Lifetime Warranty
The 375 Raptor Suppressed SBR is backed by the Chattahoochee Munitions Limited Lifetime Warranty for the original purchaser, subject to applicable warranty terms and functional limitations.
Built by Chattahoochee Munitions, this 375 Raptor Suppressed SBR combines a fast-twist 375 Raptor barrel, PVD-coated action, adjustable billet chassis and titanium PLACID OTB system into a purpose-built suppressed platform.
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