Chattahoochee Munitions manufactures this 375 Raptor suppressed SBR, a 12.5-inch CM7S bolt action fitted with the all-titanium PLACID OTB over-the-barrel suppressor. It pairs an unported Mos-Tek 416R stainless barrel with a 1:8 twist, a TriggerTech trigger, and the CM7 billet aluminum chassis, and you choose the Cerakote finish and the furniture color.
The 375 Raptor was designed by Arne Brennan, and its 400 gr subsonic load is made to be shot suppressed. See every configuration in the Raptor Paddock, and read 375 Raptor subsonic for the load and 375 Raptor hunting for guidance by game and distance.
Why Choose a 375 Raptor Suppressed SBR
Three things make a suppressed firearm quiet: subsonic ammunition, an action that does not cycle, and a suppressor matched to the platform. This 375 Raptor suppressed SBR has all three. The 400 gr subsonic load stays below the speed of sound even on a 0°F morning, the bolt stays closed until you open it, and the PLACID OTB keeps the complete 375 Raptor suppressed SBR short and well balanced at 7 lb 13.6 oz.
For feral hogs at night, a quiet report helps keep the rest of the group from scattering. For whitetail deer from a stand, a short 375 Raptor suppressed SBR is easy to bring up and easy to carry. The 400 gr subsonic bullet carries about 842 ft-lb at 100 yards; with a 100-yard zero it drops about 13 inches at 150 yards, so keep subsonic shots at known distances.
PLACID OTB Over-the-Barrel Suppressor
The PLACID OTB is an all-titanium suppressor designed for the 12.5-inch CM7S. Its 12.5-inch reflex tube extends back over the unported, full-length barrel, and only the 6-inch 3D-printed titanium baffle stack sits forward of the muzzle. The suppressor is 18.25 inches long, 1.5 inches in diameter, and 23.6 oz, and the complete firearm weighs 7 lb 13.6 oz. Because most of the suppressor surrounds the barrel, this 375 Raptor Suppressed SBR measures 31.00 to 38.625 inches overall with the suppressor installed. The rifle is an SBR, and both the short-barreled rifle and the suppressor are subject to National Firearms Act requirements; see NFA Firearms.
CM7S Action and Trigger
The CM7S action is steel with a Remington 700 footprint and a full PVD coating. It has three locking lugs, a 60-degree throw, and a one-piece spiral-fluted bolt with a .718-inch body, an M16-style extractor, and a .062-inch firing pin, with the standard .308 bolt face the 375 Raptor uses. Wire EDM raceways, an integrated .300-inch recoil lug, a side-release bolt stop, an oversized bolt knob, and a pinned 20 MOA Picatinny rail complete the action of this 375 Raptor Suppressed SBR. The TriggerTech Remington 700 Primary trigger comes flat or curved, adjusts from 1.5 to 4.0 lb, and removes without tools.
Barrel and 1:8 Twist
The 12.5-inch barrel is made by Mos-Tek from 416R stainless steel with 5R rifling and a 1:8 twist, finished in E100 Blackout Cerakote, with a shouldered crown, 11/16×24 muzzle threads, and Remage barrel-nut mounting. The 1:8 twist gives the long 400 gr subsonic bullet a wide stability margin over Maker Bullets’ 1:11 guidance. Read 375 Raptor twist rate and 375 Raptor barrel length for the details.
Ammunition and Magazine
From the 12.5-inch barrel, the Chattahoochee Munitions 400 gr Maker REX subsonic load averages about 1,016 fps, roughly 917 ft-lb at the muzzle and about 842 ft-lb at 100 yards. Use the bolt action load: 400 gr subsonic for bolt action. Bolt action and semi-auto 375 Raptor ammunition are loaded separately. Full tables are in 375 Raptor ballistics.
One 10-round Magpul PMAG 7.62 AC AICS-pattern magazine is included, and spares are available as CM7S 375 Raptor magazines.
Choose Your Cerakote Finish
Select the main color and the accent color when you order. The main color is the Cerakote finish: Black Tungsten, Cobalt Kinetics Green, FDE Metallic, FDE, Carbon Grey, OD Green, Burnt Bronze, Midnight Bronze, or Vortex Bronze Cerakote. The accent color is the furniture and cheek riser: Black or Coyote. Every combination shares the same action, barrel, trigger, PLACID OTB, and mechanical specifications, and every barrel is finished in E100 Blackout Cerakote.
375 Raptor Suppressed SBR Specifications
- Manufacturer: Chattahoochee Munitions
- Platform: CM7S bolt action
- Chambering: 375 Raptor (designed by Arne Brennan)
- Configuration: SBR with PLACID OTB
- Barrel: 12.5-inch Mos-Tek 416R stainless steel, 5R rifling, unported full length
- Twist rate: 1:8
- Barrel finish: E100 Blackout Cerakote
- Muzzle: 11/16×24 threads, shouldered crown
- Suppressor: PLACID OTB, all titanium: 12.5-inch reflex tube, 6-inch 3D-printed baffle stack, 18.25 inches long, 1.5-inch diameter, 23.6 oz
- Barrel mounting: Remage barrel nut, 1-1/16-16 action threads
- Action: Steel, Remington 700 footprint, three locking lugs, 60-degree throw, full PVD coating, about 25 oz
- Bolt: One-piece spiral-fluted, .718-inch body, .308 bolt face, M16-style extractor
- Firing pin: .062-inch
- Optic rail: Pinned 20 MOA Picatinny
- Trigger: TriggerTech Remington 700 Primary, flat or curved, adjustable 1.5-4.0 lb
- Chassis: CM7 billet aluminum, flared magazine well, ambidextrous magazine release, full-length ARCA, M-LOK, dual QD
- Grip: CM Precision Vertical Crossover Grip
- Rear: Telescoping stock with adjustable cheek riser
- Finish: Choice of Black Tungsten, Cobalt Kinetics Green, FDE Metallic, FDE, Carbon Grey, OD Green, Burnt Bronze, Midnight Bronze, or Vortex Bronze Cerakote, with Black or Coyote furniture
- Magazine: One 10-round Magpul PMAG 7.62 AC AICS-pattern
- Overall length: 31.00-38.625 inches with PLACID OTB
- Length of pull: 6.0-13.5 inches
- Weight: 7 lb 13.6 oz with PLACID OTB installed; the listing weight is for shipping
375 Raptor Suppressed SBR FAQ
Who makes a 375 Raptor suppressed SBR?
Chattahoochee Munitions manufactures the CM7S 375 Raptor with PLACID OTB, a complete factory 12.5-inch bolt action suppressed SBR with an all-titanium over-the-barrel suppressor, a Mos-Tek 1:8 barrel, and a TriggerTech trigger.
What finishes are available?
Black Tungsten, Cobalt Kinetics Green, FDE Metallic, FDE, Carbon Grey, OD Green, Burnt Bronze, Midnight Bronze, or Vortex Bronze Cerakote for the main color, with Black or Coyote furniture. Select both when you order; every combination shares the same mechanical specifications.
Who manufactures the Cobalt Kinetics Green Cerakote CM7S?
Chattahoochee Munitions designs and manufactures the CM7S 375 Raptor. Cobalt Kinetics Green is the name of the Cerakote finish color applied to this firearm; it identifies the finish, not the manufacturer.
How long is the CM7S 375 Raptor with PLACID OTB?
It measures 31.00 to 38.625 inches overall with the suppressor installed, because the PLACID OTB reflex tube extends back over the 12.5-inch barrel and only the 6-inch baffle stack sits past the muzzle.
What is the PLACID OTB made of?
All titanium: a 12.5-inch reflex tube and a 6-inch 3D-printed titanium baffle stack. It is 18.25 inches long, 1.5 inches in diameter, and 23.6 oz.
What NFA paperwork applies?
This is a short-barreled rifle with a suppressor, and both are subject to National Firearms Act requirements. See NFA Firearms for the current process.
What ammunition should I use for suppressed shooting?
The Chattahoochee Munitions 400 gr Maker REX subsonic load for bolt action. It stays below the speed of sound, so there is no supersonic crack downrange.
How much does it weigh?
The complete firearm weighs 7 lb 13.6 oz with the PLACID OTB installed. Any heavier listing weight is the shipping weight.
Who designed the 375 Raptor?
The 375 Raptor was designed by Arne Brennan. Chattahoochee Munitions manufactures 375 Raptor firearms, barrels, magazines, suppressors, and ammunition.
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