CM10 458 SOCOM Rifle – 16″ Carbon Gray
A Different Kind of 458 SOCOM Rifle
The Chattahoochee Munitions CM10 458 SOCOM Rifle takes the 458 SOCOM concept beyond the traditional AR15 platform. Chambered in our new 458 SOCOM XL, the CM10 moves to a purpose-built large-frame AR architecture with AICS magazines, creating room for longer cartridges and heavy projectiles that are not constrained by AR15 magazine dimensions.
Rather than simply adapting traditional 458 SOCOM to another rifle, Chattahoochee Munitions developed 458 SOCOM XL around the additional cartridge-length capability of the CM10 platform.
The result is a specialized large-frame semi-automatic rifle featuring a 16-inch 1:10 twist barrel, center-feed AICS magazine system, adjustable gas block, adjustable buffer, and suppressor-ready operating system.
Finished in Carbon Gray Cerakote with Black B5 Systems furniture, this CM10 combines the unmistakable big-bore character of 458 SOCOM with an entirely different approach to cartridge length, projectile selection, feeding, and platform architecture.
Building a reliable semi-automatic platform around large-diameter, exceptionally heavy projectiles requires more than simply installing a different barrel into an existing rifle.
That is where the CM10 platform is different.
Chattahoochee Munitions developed the CM10 receiver system using our experience building specialized calibers across both AR 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.
The resulting CM10 is a sturdy, tightly fitted large-frame AR designed around dependable feeding, premium components, suppressor compatibility, and the ability to properly tune the operating system for specialized ammunition.
Carbon Gray Cerakote Configuration
This CM10 configuration pairs a Carbon Gray Cerakote receiver set, handguard, and buffer tube with Black B5 Systems furniture, creating a clean, understated appearance while retaining the purpose-built components and performance of the CM10 platform.
The Carbon Gray and Black configuration provides a neutral alternative to our Cobalt Kinetics Green configuration without changing the mechanical features that make the CM10 458 SOCOM Rifle unique.
AICS Magazine System
One of the defining characteristics of the CM10 458 SOCOM Rifle is its AICS magazine architecture.
Traditional 458 SOCOM was developed around the AR15 platform and its magazine dimensions. The CM10 takes a different approach. Its lower receiver is specifically machined to accept AICS-pattern magazines, allowing the 458 SOCOM XL cartridge to take advantage of the additional cartridge length available in a large-frame platform.
The AICS configuration also provides center feeding, an important consideration when feeding the large-diameter and heavy projectiles used in the 458 SOCOM XL.
A paddle-style magazine release is located directly in front of the trigger guard for convenient operation.
The rifle includes one 7-round MDT Metal 7.62 AICS Magazine in Black. The magazine has an integrated binder plate, and Chattahoochee Munitions adds an additional slim binder plate to help prevent cartridges from sliding forward.
CM10 7075-T6 Billet Receiver Set
The foundation of the rifle is the Chattahoochee Munitions CM10 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
- Lower receiver machined for AICS magazines
- 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 Gray Cerakote
Lower Receiver Components
The CM10 458 SOCOM Rifle uses premium components throughout the lower receiver and fire-control system.
- 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
The CM10 operating system provides additional adjustment for different ammunition and suppressor configurations.
- B5 Systems Bravo Stock – Black
- CM Mil-Spec Buffer Tube – Carbon Gray Cerakote
- QD End Plate
- Odin Works Adjustable AR10 Buffer
The Odin Works adjustable buffer works in conjunction with the Superlative Arms adjustable gas block to provide additional tuning capability when configuring the 458 SOCOM Rifle for different ammunition and suppressor combinations.
This ability to tune both the gas and buffer systems is particularly valuable in a platform intended to operate with the dramatically different characteristics of heavy subsonic and supersonic ammunition.
CM10 458 SOCOM Rifle 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 Pistol Gas Tube – Melonite
- Superlative Arms .875″ Adjustable Gas Block – Melonite
The adjustable gas system allows the CM10 458 SOCOM Rifle to be tuned for the operating characteristics of different ammunition and suppressor combinations.
Combined with the adjustable buffer system, this provides a greater range of operating adjustment than a fixed gas and buffer configuration.
CM10 LWS 15″ M-LOK Handguard
The CM10 uses our lightweight 15-inch M-LOK handguard finished in Carbon Gray 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 Gray Cerakote
- B5 Systems Rail Covers – Black
CM 458 SOCOM Rifle 16″ Barrel
At the center of the CM10 is the CM 16-inch 458 SOCOM XL barrel, developed around the unique requirements of the extended cartridge and the heavy projectiles it is designed to accommodate.
- Caliber: 458 SOCOM XL
- Barrel Length: 16″
- Material: 416R Stainless Steel
- Twist Rate: 1:10
- Rifling: 5R
- Muzzle Threads: 11/16×24
- Gas Journal: .875″
- Finish: Black Cerakote
- Barrel Extension: Center Feed
The fast 1:10 twist rate is specifically suited to stabilizing the exceptionally heavy projectiles that make 458 SOCOM XL particularly capable in subsonic applications.
The 16-inch barrel configuration also provides additional versatility for shooters who intend to take advantage of both the subsonic and supersonic capabilities of the cartridge.
Combined with the CM10’s AICS magazine system, center-feed barrel extension, adjustable gas system, and adjustable buffer, the barrel is part of a complete operating system designed around the 458 SOCOM XL rather than an individual caliber conversion.
What Is the Difference Between 458 SOCOM and 458 SOCOM XL?
Traditional 458 SOCOM was developed for the AR15 platform and therefore operates within the cartridge overall-length limitations imposed by the AR15 magazine.
458 SOCOM XL takes a different approach.
By utilizing the large-frame CM10 platform and AICS-pattern magazines, 458 SOCOM XL has additional cartridge-length capability that is not available within the traditional AR15 magazine envelope. This allows Chattahoochee Munitions to build the cartridge and rifle around longer overall cartridge lengths and the heavy projectiles central to the platform’s intended use.
The CM10 is therefore not simply an AR10 chambered for conventional 458 SOCOM. It is a purpose-built large-frame semi-automatic 458 SOCOM rifle capable of feeding 458 SOCOM XL.
Magazine
Includes:
- 1 × 7-round MDT Metal 7.62 AICS Magazine – Black
Limited Lifetime Warranty
Chattahoochee Munitions firearms like the 458 SOCOM Rifle are covered by our Limited Lifetime Warranty.
- Limited to the original purchaser
- Limited regarding functional performance
- Limited regarding the firearm’s original configuration
Frequently Asked Questions
What is the CM10 458 SOCOM AR10 Rifle?
The CM10 458 SOCOM AR10 Rifle is a purpose-built large-frame semi-automatic rifle from Chattahoochee Munitions chambered in 458 SOCOM XL. Unlike traditional 458 SOCOM rifles built around the AR15 platform, the CM10 uses a large-frame receiver and AICS-pattern magazine system to accommodate the longer 458 SOCOM XL cartridge.
What is 458 SOCOM XL?
458 SOCOM XL is an extended version of the 458 SOCOM concept developed for the Chattahoochee Munitions CM10 platform. Instead of being constrained by AR15 magazine dimensions, 458 SOCOM XL takes advantage of the additional cartridge overall length available with the CM10’s AICS magazine system.
This allows the rifle and cartridge to be designed around longer overall cartridge lengths and the heavy projectiles central to the platform’s intended use.
What is the difference between 458 SOCOM and 458 SOCOM XL?
Traditional 458 SOCOM was developed around the AR15 platform and its magazine-length limitations. 458 SOCOM XL moves to the large-frame CM10 platform with AICS magazines, providing additional cartridge overall-length capability.
The CM10 is therefore not simply a conventional 458 SOCOM rifle built on a larger receiver. The rifle, magazine system, barrel, and operating system are configured around 458 SOCOM XL.
Is the CM10 458 SOCOM Rifle an AR15?
No. Traditional 458 SOCOM is commonly associated with the AR15 platform, but the CM10 458 SOCOM XL is a large-frame AR rifle.
The CM10 uses Chattahoochee Munitions’ proprietary large-frame receiver system with an AICS-pattern magazine architecture.
Does the CM10 458 SOCOM Rifle use standard AR10 magazines?
No. The CM10 lower receiver is specifically machined to use AICS-pattern magazines rather than conventional AR10 magazines.
The AICS magazine architecture provides center feeding while also allowing the 458 SOCOM XL cartridge to take advantage of additional overall cartridge length.
What magazine comes with the CM10 458 SOCOM XL?
The rifle includes one 7-round MDT Metal 7.62 AICS Magazine in Black.
The magazine incorporates a binder plate, and Chattahoochee Munitions installs an additional slim binder plate to help prevent cartridges from sliding forward.
What is the twist rate of the 16-inch 458 SOCOM XL barrel?
The 16-inch CM 458 SOCOM Rifle barrel uses a 1:10 twist rate with 5R rifling. The fast twist rate is intended to stabilize the exceptionally heavy projectiles used with the 458 SOCOM XL platform, particularly in subsonic applications.
Can the CM10 458 SOCOM XL be used with a suppressor?
Yes. The CM10 is designed with suppressed operation in mind. It features a Superlative Arms adjustable gas block and Odin Works adjustable AR10 buffer, allowing the operating system to be tuned for different ammunition and suppressor combinations.
The 16-inch barrel is threaded 11/16×24 for compatible muzzle devices and suppressor mounting systems.
Is the CM10 458 SOCOM XL designed for subsonic ammunition?
The CM10 458 SOCOM XL is particularly well suited to heavy subsonic projectiles, with its 1:10 twist barrel, adjustable gas system, adjustable buffer, and AICS magazine architecture.
The 16-inch configuration also provides versatility for shooters who intend to use both subsonic and supersonic 458 SOCOM XL ammunition.
What finish does the Carbon Gray CM10 use?
The receiver set, 15-inch M-LOK handguard, and buffer tube are finished in Carbon Gray Cerakote. The rifle is paired with Black B5 Systems furniture and rail covers for a subdued two-tone Carbon Gray and Black appearance.
Does the CM10 458 SOCOM XL have a warranty?
Yes. Chattahoochee Munitions firearms including this 458 SOCOM Rifle are covered by a Limited Lifetime Warranty for the original purchaser, subject to the terms and limitations of the warranty.
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