CM7S 338 ARC 12″ Lightweight Compact Bolt Action Pistol or SBR FDE Metallic

338 ARC Pistol: 12″ Lightweight Compact Bolt Action Pistol or SBR FDE Metallic

CM7S Bolt Action 338 arc Pistol  – This is our flagship Bolt Action pistol. Having built bolt-action rifles and pistols for years on several platforms, we have taken the best there is to offer and combined them to create our perfect version of a bolt-action hunting rifle.

The boundaries of compact firearm engineering are being rewritten by the introduction of the Advanced Rifle Cartridge family, and nowhere is this more evident than in the precision handgun market. For shooters demanding absolute mechanical consistency, massive terminal energy, and a remarkably small physical footprint, the 338 ARC Pistol stands as the definitive answer.

By marrying a high-performance, large-bore caliber with a premium, short-action bolt mechanism, Chattahoochee Munitions has created an incredibly unique tactical tool. The 338 ARC pistol bypasses the mechanical variables and gas-tuning requirements of semi-automatic platforms, delivering unyielding shot-to-shot consistency. Built on our elite CM7S architecture, this 338 ARC pistol offers unmatched, hard-hitting performance optimized for close-range hunting, vehicle operations, and ultra-quiet suppressed applications.

Technical Specifications & Factory Description

From the Workshop: This is a 12″ 338 ARC pistol from Chattahoochee Munitions. This will be one of the sturdiest-feeling weapons, as everything is designed in tight tolerances. Built directly on our custom CM7S short action, this pistol configuration delivers incredible rigidity and absolute mechanical reliability. Our bolt action pistols are designed to optimize large-bore ballistic performance without the added weight or complexity of an NFA short-barreled rifle configuration.

Complete Component Breakdown

• CM7S Precision Bolt Action:

  • Premium short-action footprint machined from high-tensile steel

  • Ultra-smooth, tight-tolerance bolt lift and cycling engagement

  • Integrated top Picatinny rail for direct, rock-solid optic mounting

  • Optimized ejection port dimensions for flawless extraction of ARC casings

• Chassis & Interface System:

  • CNC-machined aluminum precision pistol chassis

  • Accepts standard AICS-pattern detachable box magazines

  • Flared mag-well entry for seamless, rapid reloading under pressure

  • Ergonomic AR-15 style pistol grip interface (ships with premium vertical tactical grip)

  • Rear vertical Picatinny rail or interface configured for standard pistol stabilizing braces

  • Hardcoat anodized or premium Black Tungsten Cerakote protective finish

• Handguard & Accessory Real Estate:

  • CM7S LWS M-LOK Handguard: Rigid aluminum construction with a dual-taper mounting system, full-length top Picatinny rail, and M-LOK attachment slots at the 3, 6, and 9 o’clock positions for lasers, bipods, or barricade stops.

• Barrel & Ballistic Architecture:

  • CM7S 338 ARC 12″ Match-Grade Barrel

  • Precision-machined from 416R Stainless Steel with a durable protective coating

  • Fast twist rate engineered to stabilize massive .338 caliber heavy subsonic and high-velocity supersonic projectiles

  • Perfectly concentric, shouldered muzzle crown featuring clean 5/8×24 threads (the standard for large-bore suppressor hosting)

• Dimensions & Compliance Profiles:

  • Magazine: Includes 1x high-capacity AICS-compatible box magazine

  • Overall Weight (OAW): Highly optimized, lightweight build (~5 lbs depending on final brace configuration)

  • Legal Classification: Federally classified as a 338 arc Pistol (Not an NFA short-barreled rifle), allowing for standard over-the-counter FFL transfer without the long wait times of a tax stamp.

  • Warranty: Limited Lifetime Warranty covering functional mechanical performance and original build craftsmanship.

The 338 ARC Cartridge in a Bolt-Action Pistol Platform

The development of the 338 ARC Pistol concept addresses a highly specific, tactical niche: maximum energy delivery in the smallest possible weapon system. Unlike traditional small-bore pistol cartridges that lose lethal velocity rapidly out of short barrels, the 338 ARC pistol relies on high projectile mass and an exceptionally efficient powder-burning profile.

When fired from a 338 ARC pistol, the cartridge retains incredible terminal ballistics. Heavy subsonic rounds (frequently exceeding 200 to 250 grains) achieve full powder ignition within the 12-inch barrel length, ensuring that no energy is wasted as unburnt powder out of the muzzle. This heavy-caliber design transfers extreme kinetic energy upon target impact, offering massive cross-sectional density that vastly outperforms intermediate options like 300 Blackout or 9mm sub-guns.

Why Choose a Bolt-Action Pistol?

While semi-automatic platforms are popular, a 338 ARC pistol (Bolt Action) provides distinct engineering advantages that make it an elite choice for precision shooters and hunters alike:

1. Absolute Suppression Performance

In a semi-automatic gas system, a percentage of high-pressure gas and noise escapes from the ejection port during the cycling process (often called “port pop”). Because a bolt action mechanism remains completely sealed until the shooter manually cycles the action, 100% of the expanding gases are directed forward through your suppressor. This makes a suppressed CM7S pistol one of the quietest large-bore firearms on the planet.

2. Elimination of Gas Tuning Variables

Large-bore cartridges moving between ultra-heavy subsonic loads and high-velocity supersonic hunting ammo create wildly different pressure spikes. Semi-automatic rifles require adjustable gas blocks and buffer tuning to cycle these contrasting loads reliably. The CM7S bolt action completely eliminates these mechanical liabilities—it cycles every load, from light target rounds to heavy specialty hunting handloads, with zero adjustment required.

3. Ultimate Structural Rigidity

Because the barrel is threaded directly into a solid, short-action steel receiver mounted within a rigid aluminum chassis, the entire system acts as a singular, inflexible unit. This tight-tolerance manufacturing standard completely removes any structural flex, providing bench-rest style accuracy from an incredibly compact, packable handgun format.

+--------------------------------------------------------+
|          CM7S BOLT ACTION SUPPRESSION EFFICIENCY       |
+--------------------------------------------------------+
|   SEALED BOLT ACTION   →  100% Gas Directed Forward    |
|   (Zero Port Influx)   →  Maximum Suppressor Efficiency|
+--------------------------------------------------------+
|   SEMI-AUTO GAS SYSTEM →  Gas Vents via Ejection Port  |
|   (Mechanical Noise)   →  Increased Action Carbon Influx|
+--------------------------------------------------------+
| RESULT: The CM7S Delivers Unmatched Subsonic Stealth & Clean Reliability|
+--------------------------------------------------------+

Factory Direct Muzzle Device Selections

Because a compact, large-bore pistol is the perfect candidate for running a suppressor, the CM7S 12″ barrel comes finished with precision-machined 5/8×24 muzzle threads. You can choose your preferred muzzle attachment directly from our workshop menu when placing your order:

• Thread Protector Only: Keeps the muzzle minimal and protects threads when running a bare barrel.

• Dead Air Keymo Brake / Flash Hider: Provides an instant, robust, quick-detach mounting solution for Dead Air suppressors.

• SilencerCo ASR Brake: A positive-locking, industry-proven multi-lug mounting system.

• Rugged 3-Port Brake: Tames muzzle rise effectively while accepting Rugged silencer systems.

• Yankee Hill Brake: A secure, heavy-duty mounting interface built for YHM setups.

Frequently Asked Questions (FAQ)

Is a bolt-action 338 arc pistol legal to own without an NFA tax stamp?

Yes. Because this firearm is built from the ground up as a handgun, features a 12-inch barrel, and does not ship with a traditional rifle stock, it is federally classified as a Pistol. It does not fall under the jurisdiction of the National Firearms Act (NFA) as a Short Barreled Rifle (SBR), meaning it transfers over the counter at your local gun store via a standard Form 4473.

What is the effective range of a 12″ 338 ARC pistol?

While it is an ultra-compact platform, the match-grade 416R stainless steel barrel and rigid action provide exceptional accuracy. For hunting applications (such as feral hogs or deer), it maintains devastating terminal energy and precision out to 200–300 yards with supersonic loads, while subsonic configurations excel as a close-quarters option within 100 yards.

What magazines does this platform accept?

The CM7S chassis is designed around the highly reliable AICS (Accuracy International Chassis System) short-action magazine pattern. This ensures exceptionally smooth feeding of the wide, large-bore 338 ARC pistol profiles without the stacking or binding issues sometimes encountered in adapted semi-automatic magazines.

How loud is this pistol when paired with a quality suppressor?

When shooting heavy subsonic ammunition through a quality silencer, a 338 ARC pistol is incredibly quiet. Because there is no moving bolt carrier group or escaping gas from an ejection port, the mechanical noise is completely eliminated, making it significantly quieter than an equivalent semi-automatic setup.

Where can I find matching uppers or full-size actions?

If you are looking to complement your handgun with a long-range shoulder-fired rifle or want to browse other receiver profiles, take a look at our complete CM15 Uppers Category for AR-15 components, or explore our dedicated CM7S Bolt Action line to view our standalone precision manufacturing options.

Ordering and Delivery Logistics

Chattahoochee Munitions operates as a licensed Type 07 FFL Manufacturer and Class 2 SOT in Roswell, Georgia.

As a regulated firearm, this product cannot be shipped directly to your doorstep. It must be shipped to a local Federal Firearms Licensee (FFL) dealer of your choosing, who will facilitate your local background check and transfer paperwork. To understand the simple, step-by-step process of completing your purchase, please review our Official Firearms Buying Guide.

Our dedicated custom production, assembly checking, and accuracy tuning queues average approximately a two-week lead time from initial order processing to freight fulfillment. Dominate your next close-range hunt or tactical application with the premium craftsmanship of the Chattahoochee Munitions CM7S platform.