CM10 458 SOCOM Rifle – 16″ FDE Metallic

CM10 458 SOCOM Hunting Rifle – 16″ FDE Metallic

The Chattahoochee Munitions CM10 458 SOCOM Hunting Rifle combines a purpose-built large-frame semi-automatic platform with the heavy-projectile capability of .458 SOCOM. A 16-inch fast-twist barrel, center-feed AICS magazine architecture, adjustable gas system and adjustable buffer provide the foundation for a rifle capable of operating with both subsonic and supersonic ammunition.

This configuration is finished in FDE Metallic Cerakote with Coyote B5 Systems furniture. More importantly, the CM10 architecture provides the cartridge-length space necessary for SOCOM XL ammunition while retaining the flexibility of a semi-automatic operating system.

The 16-inch configuration gives the 458 SOCOM Hunting Rifle a practical balance between barrel length, heavy-projectile capability and the versatility of a semi-automatic platform.

Combined with the modified AICS magazine, the fast-twist barrel allows the 458 SOCOM Hunting Rifle to take advantage of extended-length SOCOM XL ammunition while retaining the standard .458 SOCOM chamber.

For hunters evaluating heavy-projectile .458 SOCOM configurations, the 458 SOCOM Hunting Rifle integrates the firearm, magazine and compatible CM10 ammunition into a coordinated system.

Built Around Heavy .458-Caliber Projectiles

The defining characteristic of this 458 SOCOM Hunting Rifle is not simply bore diameter. The CM10 was configured around the ability to use exceptionally heavy .458-caliber projectiles, including projectiles whose length can become restrictive within conventional AR-15 magazine dimensions.

The rifle’s fast 1:10 twist provides the rotational speed needed to support very heavy projectile applications. The 16-inch barrel also provides a versatile configuration for hunters who may use either subsonic or supersonic .458 SOCOM ammunition depending on the intended application.

For customers interested in heavy-projectile subsonic performance, our 458 SOCOM Subsonic guide explains the relationship between projectile weight, twist rate and the broader subsonic application.

SOCOM XL Capability Without a Different Chamber

The CM10 is chambered in .458 SOCOM. SOCOM XL is not a separate chambering and does not use a different cartridge case.

Instead, SOCOM XL describes the use of additional cartridge overall length made possible by a compatible firearm and magazine system. That distinction becomes especially useful with exceptionally long .458-caliber projectiles.

When a long projectile must fit within conventional AR-15 magazine dimensions, more of that projectile must extend into the case. The CM10’s magazine architecture provides additional usable cartridge length so compatible ammunition can seat the projectile farther out.

The chamber doesn’t get longer. The cartridge gets more room.

That additional cartridge-length capability expands the range of projectile configurations that can be considered for the 458 SOCOM Hunting Rifle.

Center-Feed AICS Magazine Architecture

Rather than using a conventional AR10 magazine, the CM10 lower receiver is machined for AICS-pattern magazines. For SOCOM XL applications, Chattahoochee Munitions uses a 7-round modified MDT metal AICS magazine specifically configured for extended-length .458 SOCOM ammunition.

The magazine feeds from the centerline of the action and works with the CM10 center-feed barrel extension. A paddle magazine release is positioned forward of the trigger guard.

This architecture is a fundamental part of the 458 SOCOM Hunting Rifle, providing the magazine length required for SOCOM XL while supporting the CM10 semi-automatic platform.

CM10 Semi-Auto Ammunition

Chattahoochee Munitions has also developed 458 SOCOM Semi Auto Ammo specifically around the feeding and operating requirements of the CM10.

The current load uses a 650gr Maker REX solid-copper expanding projectile loaded to a 2.790-inch overall length. Its propellant configuration was selected around the gas requirements of the CM10 semi-automatic operating system.

Specific propellant types, charge weights and other proprietary loading information are not published.

Developing the rifle, magazine and ammunition around the same application provides a coordinated system for customers using extended-length heavy-projectile ammunition in the CM10.

16″ Fast-Twist .458 SOCOM Barrel

The 16-inch barrel gives the 458 SOCOM Hunting Rifle a versatile configuration for both subsonic and supersonic ammunition. It is manufactured from 416R stainless steel and uses 5R rifling with a fast 1:10 twist.

• Chambering: .458 SOCOM
• Barrel Length: 16″
• Material: 416R Stainless Steel
• Rifling: 5R
• Twist Rate: 1:10
• Muzzle Threads: 11/16×24
• Gas Journal: .875″
• Gas System: Pistol Length
• Barrel Extension: Center Feed
• Finish: Black Cerakote

Adjustable Operating System

Different ammunition and suppressor configurations can change the operating requirements of a semi-automatic rifle. The CM10 provides adjustment at both the gas system and buffer.

A Superlative Arms .875″ Adjustable Gas Block works with a Melonite pistol-length gas tube. At the rear, an Odin Works Adjustable AR10 Buffer provides a second point of adjustment.

That combination gives the 458 SOCOM Hunting Rifle operating-system flexibility when changing ammunition or suppressor configurations.

7075-T6 Billet CM10 Receiver Set

The CM10 upper and lower receivers are machined from 7075-T6 billet aluminum around DPMS Low Profile architecture. The platform maintains compatibility with 16 TPI barrel nuts, DPMS-pattern barrel extensions and compatible large-frame bolt carrier groups while incorporating the CM10’s AICS magazine system.

• AICS-pattern magazine well
• Center-feed architecture
• Paddle magazine release forward of trigger guard
• Integral trigger guard
• Weight-reduction machining
• No forward assist
• Fire/Safe markings on both sides
• CM ambidextrous safety
• CM10 pivot and takedown pins

The receiver set and handguard on this configuration receive an FDE Metallic Cerakote finish.

TriggerTech Duty Trigger

The 458 SOCOM Hunting Rifle is equipped with a TriggerTech Duty Trigger. Three 3.5-pound configurations are available:

• Single-Stage Flat
• Single-Stage Curved
• Two-Stage Flat

The lower is completed with a CM ambidextrous safety and Coyote B5 Systems grip.

CM10 Bolt Carrier Group

The CM10 bolt carrier group uses a Mil-Spec 9310 steel bolt that is high-pressure tested, magnetic-particle inspected and shot-peened.

• Mil-Spec 9310 steel bolt
• HPT / proof tested
• MPI inspected
• Shot-peened
• Nitride bolt, carrier and gas key
• Hardened USGI-spec gas key
• Grade 8 gas-key fasteners
• Mil-Spec gas-key staking
• Tool-steel extractor
• T.E.A. extractor spring
• Black extractor insert
• Mil-Spec Crane O-ring

CM10 Warhammer Ambidextrous Charging Handle

The CM10 Warhammer provides ambidextrous charging access and is manufactured from 7075 aluminum. The charging handle was developed with Breek Arms.

15″ CM10 LWS M-LOK Handguard

The 16-inch 458 SOCOM Hunting Rifle uses a 15-inch CM10 LWS handguard manufactured from 6061 aluminum with a steel barrel nut.

• 15″ length
• 6061 aluminum construction
• Steel barrel nut
• Full-length Picatinny top rail
• M-LOK attachment surfaces along sides and bottom
• QD sling points at 3 and 9 o’clock
• FDE Metallic Cerakote
• Coyote B5 Systems rail covers

Coyote B5 Systems Furniture

The FDE Metallic receiver and handguard are paired with Coyote B5 Systems furniture. The rifle uses a B5 Systems Bravo Stock, B5 grip and matching rail covers.

The stock is mounted to a CM Mil-Spec buffer tube with a QD end plate and the adjustable Odin Works buffer.

Subsonic and Supersonic Hunting Applications

The 16-inch configuration allows the 458 SOCOM Hunting Rifle to serve across different ammunition applications rather than being dedicated exclusively to one type of load.

Heavy subsonic projectiles emphasize projectile mass while remaining below the speed of sound. Supersonic ammunition provides a different velocity and trajectory profile. Ammunition selection should be matched to the intended hunting application, expected distance and projectile performance requirements.

For customers interested specifically in the extended-length 650gr Maker REX load, the CM10-compatible ammunition provides an expanding solid-copper projectile in a cartridge developed around this semi-automatic platform.

CM10 458 SOCOM Hunting Rifle Specifications

• Platform: CM10 Large-Frame Semi-Automatic
• Chambering: .458 SOCOM
• SOCOM XL Capability: Yes
• Barrel: 16″ 416R Stainless Steel
• Twist: 1:10
• Rifling: 5R
• Muzzle Threads: 11/16×24
• Gas System: Adjustable / Pistol Length
• Gas Block: Superlative Arms .875″ Adjustable
• Magazine: 7-Round Modified MDT Metal AICS Magazine for SOCOM XL
• Feed Architecture: Center Feed
• Receiver: 7075-T6 Billet Aluminum
• Handguard: 15″ CM10 LWS M-LOK
• Trigger: TriggerTech Duty, Selectable Configuration
• Buffer: Odin Works Adjustable AR10 Buffer
• Stock: B5 Systems Bravo
• Furniture: Coyote B5 Systems
• Finish: FDE Metallic Cerakote

Frequently Asked Questions

Is the CM10 chambered in .458 SOCOM or .458 SOCOM XL?
The chamber is .458 SOCOM. SOCOM XL describes the extended cartridge overall-length capability made possible by the compatible CM10 firearm and magazine architecture. It is not a different chamber.

Why does the CM10 use a 1:10 twist barrel?
The fast 1:10 twist supports the use of exceptionally heavy .458-caliber projectiles, including the long projectiles associated with heavy subsonic applications.

What magazine does this rifle use?
The SOCOM XL configuration uses a 7-round modified MDT metal AICS magazine specifically configured by Chattahoochee Munitions for extended-length .458 SOCOM ammunition.

Does Chattahoochee Munitions offer ammunition for the semi-auto CM10?
Yes. Chattahoochee Munitions offers 458 SOCOM Semi Auto Ammo developed specifically around the feeding, gas and cycling requirements of the CM10.

Can the operating system be adjusted?
Yes. The CM10 incorporates an adjustable gas block and adjustable buffer, providing two points of operating-system adjustment for different ammunition and suppressor configurations.

Where can I learn more about the complete .458 SOCOM system?
Visit Terminal 458 for CM10 and CM7S firearms, SOCOM XL ammunition, magazines and technical information.

Limited Lifetime Warranty

The 458 SOCOM Hunting Rifle is backed by the Chattahoochee Munitions Limited Lifetime Warranty for the original purchaser, subject to applicable warranty terms and original-configuration requirements.

Built around a fast-twist .458 SOCOM barrel, center-feed magazine architecture and adjustable semi-automatic operating system, the CM10 brings SOCOM XL capability into a purpose-built large-frame hunting platform. Explore the complete Chattahoochee Munitions .458 SOCOM ecosystem at Terminal 458.