CM10 375 Raptor AR Rifle 16″ Carbon Grey

Get the PLACID 375 Suppressor for $50 off when purchased with a CM10 or CM7S firearm. Add a CM10 or CM7S firearm and PLACID 375 Suppressor to your cart.

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Purpose-Built 375 Raptor AR Rifle

The Chattahoochee Munitions CM10 375 Raptor AR Rifle combines our purpose-built large-frame semi-automatic platform with a 16-inch 1:7 twist barrel, centerfeed architecture, modified MDT metal magazine, adjustable gas system and adjustable buffer. Finished in Carbon Grey Cerakote with Black B5 Systems furniture, this configuration provides a subdued appearance while retaining the specialized components that define the CM10.

The 375 Raptor is capable of using exceptionally heavy projectiles, making the cartridge particularly well suited to suppressed and subsonic applications while retaining the ability to use higher-velocity ammunition. Building a dependable 375 Raptor AR Rifle around those capabilities requires more than simply installing a different barrel into a conventional large-frame AR.

Chattahoochee Munitions developed the CM10 receiver and feeding system around the requirements of specialized large-caliber cartridges. Our experience includes 375 Raptor, 8.6 Blackout, 338 Spectre, 338 Federal, 400 Legend, 243 Winchester, 22-250 Remington, 7mm-08 and 308 Winchester across both semi-automatic and bolt-action platforms.

The resulting CM10 is a purpose-built 375 Raptor AR Rifle with centerfeed operation, AICS-pattern magazine architecture and adjustable operating components that provide the flexibility required for specialized ammunition and suppressed configurations.

Carbon Grey Cerakote Configuration

This CM10 features a Carbon Grey Cerakote receiver set, handguard and buffer tube paired with Black B5 Systems furniture. The combination gives the rifle a clean, neutral appearance without changing the mechanical features of the CM10 platform.

The finish differentiates this configuration visually, while the focus remains on the same centerfeed architecture, fast-twist barrel and adjustable operating system found throughout the CM10 375 Raptor lineup.

Centerfeed System & Modified MDT Metal Magazine

One of the defining characteristics of the 375 Raptor AR Rifle is its centerfeed magazine architecture. Rather than using a conventional double-stack AR10 magazine, the CM10 lower receiver is specifically machined around an AICS-pattern magazine system.

Each rifle includes a 10-round MDT metal AICS-pattern magazine modified by Chattahoochee Munitions specifically for the CM10 375 Raptor centerfeed system. The magazine works together with the centerfeed barrel extension and receiver architecture to accommodate the large-diameter projectiles associated with 375 Raptor ammunition.

Additional CM10 375 Raptor Modified MDT Magazines are available separately from Chattahoochee Munitions.

A paddle-style magazine release is positioned directly in front of the trigger guard for convenient operation.

CM10 7075-T6 Billet Receiver Set

The foundation of the CM10 375 Raptor AR Rifle is the Chattahoochee Munitions billet receiver system.

• CNC machined from 7075-T6 billet aluminum
• DPMS Low Profile specification
• 16 TPI barrel nut compatibility
• DPMS-pattern barrel extension and BCG compatibility
• AICS-pattern magazine-compatible lower receiver
• Centerfeed configuration
• Lightweight FCG faces and magazine well
• Weight-reduction cuts on upper receiver
• No forward assist
• Fire/Safe engravings on both sides
• Integral trigger guard for increased strength
• Carbon Grey Cerakote

Lower Receiver Components

• CM Ambidextrous Safety
• Paddle Magazine Release
• CM10 Pivot and Takedown Pins
• TriggerTech Duty Trigger
  • 3.5 lb Single-Stage Flat
  • 3.5 lb Single-Stage Curved
  • 3.5 lb Two-Stage Flat
• B5 Systems Grip – Black

Stock, Buffer & Receiver Extension

• B5 Systems Bravo Stock – Black
• CM Mil-Spec Buffer Tube – Carbon Grey Cerakote
• QD End Plate
• Odin Works Adjustable AR10 Buffer

The adjustable buffer works together with the adjustable gas system to provide additional tuning capability when configuring the 375 Raptor AR Rifle for different ammunition and suppressed applications.

CM10 Upper Receiver

CM10 Bolt Carrier Group

• Mil-Spec 9310 steel
• HPT bolt – High Pressure Tested / Proof Tested
• MPI bolt – Magnetic Particle Inspected
• Shot-peened bolt
• Nitride-coated bolt
• Nitride-coated carrier
• Nitride-coated gas key
• Gas key hardened to USGI specifications
• Grade 8 hardened fasteners
• Gas key staked per Mil-Spec
• Tool-steel extractor
• T.E.A. extractor spring
• Black extractor insert
• Mil-Spec Crane O-ring

Charging Handle & Adjustable Gas System

• CM10 Warhammer Ambidextrous Charging Handle
  • 7075 aluminum
  • Developed in collaboration with Breek Arms
• CM Carbine Gas Tube – Melonite
• Superlative Arms .875″ Adjustable Gas Block – Melonite

The adjustable gas system and adjustable buffer give the CM10 additional flexibility when operating with different projectile weights, ammunition configurations and suppressors.

CM10 LWS 15″ M-LOK Handguard

The 16-inch CM10 uses our lightweight 15-inch M-LOK handguard finished in Carbon Grey Cerakote to match the receiver set.

• 6061 aluminum
• Steel barrel nut
• QD attachment points at 3 and 9 o’clock
• M-LOK attachment surfaces on sides and bottom
• Full-length Picatinny top rail
• Carbon Grey Cerakote
• B5 Systems Rail Covers – Black

CM 375 Raptor 16″ Barrel

At the center of the 375 Raptor AR Rifle is a 16-inch barrel developed in collaboration with Mos-Tek for the CM10 platform.

• Caliber: 375 Raptor
• Barrel Length: 16″
• Material: 416R Stainless Steel
• Twist Rate: 1:7
• Rifling: 5R
• Muzzle Threads: 11/16×24
• Gas Journal: .875″
• Finish: Black Cerakote
• Barrel Extension: Centerfeed

The fast 1:7 twist rate is particularly suited to stabilizing the heavy projectiles commonly associated with subsonic 375 Raptor ammunition.

The 16-inch barrel also provides versatility for customers who intend to use both subsonic and higher-velocity 375 Raptor ammunition from the same rifle.

Modified MDT Magazine

Includes:

• 1 × 10-round modified MDT metal AICS-pattern magazine – Black

The included magazine is modified by Chattahoochee Munitions specifically for the centerfeed CM10 375 Raptor platform. Additional modified MDT magazines are available separately.

Dimensions & Weight

Overall Length: 34.875″–38.250″
Overall Weight: 8 lb 4 oz with unloaded magazine and no accessories
Length of Pull: 11.375″–14.50″

Weights and dimensions shown elsewhere on the product page may reflect shipping specifications.

PLACID 375 Suppressor & Subsonic Ammunition

Suppressor performance was considered as part of the development of the CM10. The 375 Raptor AR Rifle was developed and tested with the Chattahoochee Munitions PLACID 375 Suppressor. The rifle has also been tested with a SilencerCo Hybrid 46.

Chattahoochee Munitions also offers a dedicated 400gr Maker REX 375 Raptor subsonic semi-auto load specifically configured for semi-automatic operation.

Performance with ammunition from other manufacturers may vary, particularly with subsonic loads. Semi-automatic operation depends on the ammunition, gas system, suppressor and other system variables working together appropriately.

A Complete 375 Raptor System

The CM10 375 Raptor AR Rifle is available as part of a broader 375 Raptor ecosystem developed by Chattahoochee Munitions. Customers can pair the rifle with the modified MDT metal magazine, dedicated semi-auto 375 Raptor ammunition and PLACID 375 Suppressor.

Rather than forcing the customer to assemble unrelated components, Chattahoochee Munitions provides the rifle, feeding system, ammunition and suppression products as complementary parts of the same platform.

Explore The Raptor Paddock

For additional information about the 375 Raptor cartridge, available firearms, ammunition and related products, visit The Raptor Paddock, the Chattahoochee Munitions 375 Raptor caliber hub.

Limited Lifetime Warranty

Chattahoochee Munitions firearms, including the 375 Raptor AR Rifle, are covered by our Limited Lifetime Warranty.

• Limited to the original purchaser
• Limited regarding functional performance
• Limited regarding the firearm’s original configuration

Why Choose the CM10 375 Raptor AR Rifle?

The CM10 isn’t simply a conventional large-frame AR fitted with a 375 Raptor barrel. Its centerfeed architecture, modified MDT metal magazine, adjustable gas system, adjustable buffer, 1:7 twist barrel and billet receiver set make it a purpose-built platform developed around the cartridge.

For shooters looking for a 375 Raptor AR Rifle capable of supporting heavy subsonic ammunition, suppressed operation and the broader capabilities of 375 Raptor, the 16-inch CM10 provides a versatile semi-automatic platform backed by compatible magazines, ammunition and suppression products from Chattahoochee Munitions.

Finished in Carbon Grey Cerakote with Black B5 Systems furniture, this configuration delivers a clean, understated appearance without making the finish the defining feature of the rifle.