CM10 375 Raptor AR SBR 12.5″

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 SBR

The Chattahoochee Munitions CM10 375 Raptor AR SBR is a purpose-built large-frame semi-automatic platform developed around the capabilities of the .375 Raptor cartridge. Built with a 12.5-inch 1:7 twist barrel, centerfeed system, modified MDT metal magazine, adjustable gas system and adjustable buffer, the CM10 combines the heavy-projectile capabilities of 375 Raptor with the compact dimensions of a short-barreled rifle.

The 12.5-inch configuration makes the 375 Raptor AR SBR particularly well suited to suppressed applications. The cartridge can use exceptionally heavy projectiles for subsonic applications while also supporting higher-velocity ammunition, giving the CM10 considerable versatility from a compact large-frame platform.

Chattahoochee Munitions has extensive experience developing firearms in specialized calibers across both semi-automatic and bolt-action platforms. Our experience includes 375 Raptor, 8.6 Blackout, 338 Spectre, 338 Federal, 400 Legend, 243 Winchester, 22-250 Remington, 7mm-08 and 308 Winchester.

Rather than simply adapting a conventional large-frame AR with a different barrel, Chattahoochee Munitions developed the CM10 upper and lower receiver system around centerfeed operation, AICS-pattern magazine architecture, dependable feeding, premium components and compatibility with proven DPMS-pattern parts.

Finished in FDE Metallic Cerakote with Coyote B5 Systems furniture, this CM10 provides the same purpose-built mechanical configuration as the other 12.5-inch CM10 375 Raptor SBRs while offering a different exterior finish.

Centerfeed System & Modified MDT Metal Magazine

One of the defining characteristics of the 375 Raptor AR SBR is its feeding system. Instead of using a conventional double-stack AR10 magazine, the CM10 uses a centerfeed architecture built around an AICS-pattern magazine.

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 used in 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 Billet Upper & Lower Receiver

• 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
• FDE Metallic 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 Coyote Grip

Receiver Extension & Stock

• B5 Systems Bravo Stock – Coyote
• CM Mil-Spec Buffer Tube – FDE Metallic Cerakote
• QD End Plate
• Odin Works Adjustable AR10 Buffer

The adjustable buffer works together with the adjustable gas system to provide additional tuning capability for the 375 Raptor AR SBR, particularly when configuring the rifle for suppressed operation and specialized ammunition.

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, Gas System & Handguard

• CM10 Warhammer Ambidextrous Charging Handle
  • 7075 aluminum
  • Developed in collaboration with Breek Arms
• CM Carbine Gas Tube – Melonite
• Superlative Arms .875″ Adjustable Gas Block – DLC
• CM10 LWS 15″ M-LOK Handguard – FDE Metallic Cerakote
  • 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
• B5 Systems Coyote Rail Covers

CM 375 Raptor 12.5″ Barrel

At the heart of the 375 Raptor AR SBR is a 12.5-inch barrel developed in collaboration with Mos-Tek for the CM10 platform.

• Caliber: 375 Raptor
• Barrel Length: 12.5″
• 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 used in subsonic 375 Raptor ammunition.

Combined with the compact 12.5-inch barrel, the CM10 provides a short overall host configuration for customers who intend to add a suppressor while retaining the heavy-projectile capabilities that distinguish the 375 Raptor cartridge.

Modified MDT Magazine

Includes:

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

The included magazine is modified by Chattahoochee Munitions specifically for the centerfeed CM10 375 Raptor system. Customers requiring additional magazines can purchase the CM10 375 Raptor Modified MDT Magazine separately.

PLACID 375 Suppressor & Subsonic Ammunition

The 375 Raptor AR SBR was developed and tested with the Chattahoochee Munitions PLACID 375 Suppressor. The compact 12.5-inch configuration makes the rifle particularly well suited to customers planning a suppressed 375 Raptor system. The rifle has also been tested with a SilencerCo Hybrid 46.

Chattahoochee Munitions 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 ammunition. Semi-automatic operation depends on the ammunition, gas system, suppressor and other system variables working together appropriately.

A Complete Suppressed 375 Raptor Platform

The CM10 375 Raptor AR SBR can be paired with the modified MDT metal magazine, dedicated semi-auto 375 Raptor ammunition and PLACID 375 Suppressor as complementary components of the same platform.

This gives customers the ability to source the rifle, purpose-modified feeding system, ammunition and suppression products from Chattahoochee Munitions rather than assembling an unrelated collection of components.

Explore The Raptor Paddock

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

Limited Lifetime Warranty

Chattahoochee Munitions firearms, including the 375 Raptor AR SBR, 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 SBR?

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

The 12.5-inch barrel configuration creates a compact host particularly well suited to suppressed use while retaining the heavy-projectile capabilities that make 375 Raptor distinctive.

For shooters looking for a 375 Raptor AR SBR intended for heavy subsonic ammunition, suppressed shooting and semi-automatic operation, the CM10 provides a compact 375 Raptor platform backed by compatible ammunition, magazines and suppression products from Chattahoochee Munitions.