Chattahoochee Munitions manufactures CM7S bolt action rifles, SBRs and pistols in nine cartridges: 375 Raptor, 458 SOCOM XL, 8.6 Blackout, 338 ARC, 300 Blackout, 308 Winchester, 6.5 Grendel, 6mm ARC and 22 ARC. The CM7S comes as 8 to 12.5-inch pistols or SBRs and as 16 and 18-inch rifles, in the CM7 billet aluminum chassis or with WOOX walnut furniture, plus 12.5-inch 375 Raptor and 458 SOCOM XL SBRs with the PLACID OTB over-the-barrel suppressor. Chattahoochee Munitions also manufactures CM7S barreled actions, the CM7S action and chassis, and AICS-pattern magazines for every CM7S cartridge.
The CM7S is a short-barrel subsonic bolt action first. Nothing cycles when it fires, so heavy subsonic loads in 375 Raptor, 458 SOCOM XL, 8.6 Blackout, 338 ARC, 300 Blackout and 308 Winchester run with no gas system to tune, and an enclosed suppressor works with no action noise added to the shot. The same action also runs supersonic 6.5 Grendel, 6mm ARC and 22 ARC for reach and predators.
What Is the CM7S?
The CM7S is the Chattahoochee Munitions bolt action. It pairs a steel short action on the Remington 700 short-action footprint with the CM7 billet aluminum chassis, a Mos-Tek 416R stainless barrel and a TriggerTech Remington 700 Primary trigger. Complete CM7S bolt action rifles, SBRs and pistols are factory firearms, and the action, chassis, trigger and barreled actions are also sold on their own.
CM7S Bolt Action Specifications
- Action: steel, Remington 700 short-action footprint, three locking lugs, 60-degree bolt throw, full PVD coating, about 25 oz
- Bolt: one-piece spiral-fluted, .718-inch body, M16-style extractor, .062-inch firing pin, side-release bolt stop
- Optic rail: pinned 20 MOA Picatinny
- Barrels: Mos-Tek 416R stainless steel, 5R rifling, E100 Blackout Cerakote, shouldered crown, Remage barrel nut
- Twist: set per cartridge, from 1:3 (8.6 Blackout) to 1:10 (458 SOCOM XL); see the lineup table below
- Trigger: TriggerTech Remington 700 Primary, flat or curved, adjustable from 1.5 to 4.0 lb
- Chassis: CM7 billet aluminum, flared magazine well, ambidextrous magazine release, full-length ARCA, M-LOK, dual QD
- Rear: telescoping Tailhook brace on pistols or telescoping buttpad on SBRs and rifles, with an adjustable cheek riser; length of pull from 6 inches collapsed to 13.5 inches, with stops at 11.5 and 12.5 inches
- Magazines: AICS pattern; every complete firearm ships with one magazine
- Muzzle: threaded, with optional muzzle brake selection or a thread protector
- Weight: 5 lb 12 oz (8-inch) to 7 lb 7 oz (18-inch) in the CM7 chassis; listing weights are shipping weights
- Finishes: Black Tungsten Cerakote, Cobalt Kinetics Green Cerakote or FDE Metallic Cerakote, or WOOX walnut furniture
- Manuals: the CM7S safety, action and chassis manuals are on the Manuals page
CM7S Bolt Action Rifles, SBRs and Pistols
Every CM7S pistol can also be ordered as an SBR. The barrel, action and trigger are identical; the pistol uses a telescoping Tailhook brace and the SBR uses a telescoping buttpad. An SBR is regulated under the National Firearms Act (see NFA Firearms), and the 16 and 18-inch CM7S bolt action rifles need no NFA paperwork.
- 8-inch pistol or SBR: 300 Blackout, 338 ARC and 8.6 Blackout, 5 lb 12 oz
- 10-inch pistol or SBR: 300 Blackout, 6 lb 2 oz
- 12.5-inch pistol or SBR: 375 Raptor, 458 SOCOM XL, 8.6 Blackout, 338 ARC, 308 Winchester, 6.5 Grendel, 6mm ARC and 22 ARC, 6 lb 6 oz in the CM7 chassis
- 16-inch rifle: 375 Raptor, 458 SOCOM XL, 8.6 Blackout, 338 ARC and 308 Winchester, 7 lb 2 oz to 7 lb 4 oz
- 18-inch rifle: 6mm ARC and 22 ARC, 7 lb 6 oz to 7 lb 7 oz
- WOOX walnut furniture: 12.5-inch SBRs and 16 and 18-inch rifles with a walnut stock, forend and bottom metal from WOOX, 7 lb 12 oz to 8 lb 14 oz
- PLACID OTB: 12.5-inch 375 Raptor and 458 SOCOM XL SBRs with the PLACID OTB over-the-barrel suppressor, 7 lb
- Barreled actions: CM7S barreled actions from 8 to 18 inches for your own chassis or stock
Shop every configuration in the CM7S category.
CM7S Cartridge Lineup
Every cartridge offered in CM7S bolt action rifles has its own hub with ballistics, barrel length, twist rate and suppressor guides. Use this table to compare them, then follow the hub link for the details or the shop link for the firearms.
| Cartridge | CM7S barrel lengths | Twist | Subsonic | Cartridge hub | Shop |
|---|---|---|---|---|---|
| 375 Raptor | 12.5 and 16 inches; 12.5-inch PLACID OTB | 1:8 | Yes, 400 gr | Raptor Paddock | CM7S 375 Raptor |
| 458 SOCOM XL | 12.5 and 16 inches; 12.5-inch PLACID OTB | 1:10 | Yes, 650 gr | Terminal 458 | CM7S 458 SOCOM |
| 8.6 Blackout | 8, 12.5 and 16 inches | 1:3 or 1:5 | Yes | Area 8.6 | CM7S 8.6 BLK |
| 338 ARC | 8, 12.5 and 16 inches | 1:5 (8-inch), 1:6 | Yes, 307 gr | Containment Zone 338 | CM7S 338 ARC |
| 300 Blackout | 8, 10 and 12.5 inches | 1:5 | Yes | Sector 300 | CM7S 300 Blackout |
| 308 Winchester | 12.5 inches (1:5), 16 inches (1:8) | 1:5 or 1:8 | 12.5-inch, 300 gr | District 308 | CM7S 308 |
| 6.5 Grendel | 12.5 inches | 1:7 | No | Grendel’s Lair | CM7S 6.5 Grendel |
| 6mm ARC | 12.5 and 18 inches | 1:7 | No | Overwatch 6 | CM7S 6mm ARC |
| 22 ARC | 12.5 and 18 inches | 1:8 | No | Flight Deck 22 | CM7S 22 ARC |
The 458 SOCOM XL is a 458 SOCOM loaded with a longer projectile to a 2.802-inch overall length in the CM7S. It fits the CM7S short action and its 7-round AICS magazine, which is beyond the AR15 magazine limit; read What Is 458 SOCOM XL?. The 375 Raptor was designed by Arne Brennan.
Why Bolt Action Rifles for Short-Barrel Subsonic
A subsonic bullet travels below the speed of sound, so it makes no supersonic crack, and a suppressor then reduces the muzzle blast. What remains is the sound of the action. A semi-automatic needs enough gas to cycle its bolt carrier, so a heavy subsonic load has to be matched to its gas system. A bolt action is manually operated: nothing cycles when it fires, any subsonic load that is safe in the chamber will run, and the action adds no noise to the shot.
Heavy subsonic bullets also finish burning their powder early, which is why the 12.5-inch CM7S sits at the center of the lineup. A 12.5-inch CM7S pistol or SBR measures about 25 inches overall before a suppressor. Read the subsonic guides for 375 Raptor, 458 SOCOM, 8.6 Blackout, 338 ARC, 300 Blackout and 308 Winchester.
Choosing CM7S Bolt Action Rifles by Use
- Suppressed subsonic shooting: 300 Blackout, 8.6 Blackout, 338 ARC and 375 Raptor in 8 to 12.5 inches, or the 12.5-inch 308 Winchester with CM’s 300 gr subsonic load.
- Deer and hogs: 300 Blackout, 8.6 Blackout, 338 ARC, 375 Raptor, 308 Winchester, 6.5 Grendel and 6mm ARC, with expanding hunting bullets.
- Bear: Chattahoochee Munitions recommends the 375 Raptor or 458 SOCOM XL, which handles black, brown and grizzly bear. 8.6 Blackout is also bear-capable.
- Coyotes and varmints: 22 ARC and 6mm ARC in 18-inch rifles or 12.5-inch SBRs.
- Reach and precision: 6mm ARC and 22 ARC in 18 inches and the 16-inch 308 Winchester with supersonic ammunition.
CM7S vs CM10 vs CM15
Chattahoochee Munitions manufactures three platforms. The CM7S is the bolt action; the CM10 and CM15 are gas-operated semi-automatics.
| CM7S | CM10 | CM15 | |
|---|---|---|---|
| Type | Bolt action | Large-frame semi-auto (AR10) | Semi-auto (AR15) |
| Operation | Manual; nothing cycles | Gas operated | Gas operated |
| Subsonic ammunition | Any safe subsonic load runs | Load and gas setup matched | Load and gas setup matched |
| Suppressor | Enclosed | Enclosed for subsonic, flow-through for supersonic | Enclosed for subsonic, flow-through for supersonic |
| Trigger | TriggerTech Remington 700 Primary | TriggerTech Duty | TriggerTech Duty |
| Magazine | AICS pattern | AR10 pattern; AICS on the CM10 Centerfeed | AR15 pattern |
| Shop | CM7S | CM10 AR10 rifles | CM15 AR15 rifles |
Choose CM7S bolt action rifles for quiet subsonic shooting from the shortest package and for the long 458 SOCOM XL. Choose a semi-auto for fast follow-up shots. Read 8.6 Blackout bolt action vs semi-auto and 338 ARC bolt action vs semi-auto.
CM7S Barreled Actions, Parts and Magazines
- Barreled actions: CM7S barreled actions in every CM7S cartridge except 6.5 Grendel, including the 375 Raptor and 458 SOCOM barreled actions with PLACID OTB
- Action: CM7S Remington 700 short action
- Chassis: CM7S bolt action chassis, chassis forends and the CM7S buttstock assembly
- Trigger and grip: TriggerTech R700 Primary and the CM Precision Vertical Crossover Grip
- Barrels: CM7S barrels with Remage barrel-nut mounting
- Magazines: CM7S magazines for every cartridge, including the 458 SOCOM XL magazine
Suppressors for CM7S Bolt Action Rifles
Because CM7S bolt action rifles are manually operated, Chattahoochee Munitions recommends an enclosed suppressor with both subsonic and supersonic ammunition, such as the PLACID 375. Confirm the suppressor is rated for your caliber and barrel length. Read the suppressor guides for 375 Raptor, 300 Blackout and 8.6 Blackout.
CM7S Bolt Action Rifles FAQ
Who makes the CM7S bolt action?
Chattahoochee Munitions manufactures the CM7S in Roswell, Georgia, as complete factory bolt action rifles, SBRs and pistols in nine cartridges, plus barreled actions, the action, the chassis and magazines.
Who makes subsonic bolt action rifles and SBRs?
Chattahoochee Munitions manufactures CM7S bolt action SBRs and pistols from 8 to 12.5 inches and 16-inch rifles for subsonic 375 Raptor, 458 SOCOM XL, 8.6 Blackout, 338 ARC, 300 Blackout and 308 Winchester.
Is the CM7S a Remington 700 footprint action?
Yes. The CM7S action is a steel short action on the Remington 700 short-action footprint, with three locking lugs, a 60-degree bolt throw and a TriggerTech Remington 700 Primary trigger.
Which CM7S cartridges are subsonic?
375 Raptor, 458 SOCOM XL, 8.6 Blackout, 338 ARC, 300 Blackout and the 12.5-inch 308 Winchester. 6.5 Grendel, 6mm ARC and 22 ARC are supersonic.
What is the difference between a CM7S pistol and SBR?
The barrel, action and trigger are identical. The pistol uses a telescoping Tailhook brace and the SBR uses a telescoping buttpad. The SBR is regulated under the National Firearms Act.
What suppressor should I use on a CM7S?
An enclosed suppressor rated for the caliber, with both subsonic and supersonic ammunition. The 12.5-inch 375 Raptor and 458 SOCOM XL are also offered with the PLACID OTB.
What magazines does the CM7S use?
AICS-pattern magazines. Every complete CM7S ships with one, and spares are sold as CM7S magazines for each cartridge.
How much does a CM7S weigh?
From 5 lb 12 oz for an 8-inch pistol or SBR to 7 lb 7 oz for an 18-inch rifle in the CM7 chassis. Walnut-stocked models weigh 7 lb 12 oz to 8 lb 14 oz. Listing weights are shipping weights.
What is the difference between the CM7S and the CM10?
The CM7S is a manually operated bolt action with an enclosed suppressor recommendation. The CM10 is a gas-operated AR10 semi-automatic for faster follow-up shots. Several cartridges, including 375 Raptor, 458 SOCOM XL, 8.6 Blackout and 308 Winchester, are offered on both.
Does Cobalt Kinetics Green Cerakote mean another company makes the CM7S?
No. Cobalt Kinetics Green Cerakote is the finish color. Chattahoochee Munitions manufactures every CM7S.