CM10 7mm-08 Rem 18″ Rifle AR10 SR25 Cobalt Kinetics Green and Coyote

This is a 7mm-08 Rem AR10 rifle from Chattahoochee Munitions. We have been building in less mainstream calibers since our inception, both in AR and bolt-action platforms. 8.6BLK, 243 Win, 22-250 Rem, 338 Spectre, 400 Legend, 338 Federal, etc. Experience building with various lowers, uppers, and handguards, both in low and high profile, allowed us to weigh all pros and cons and create our perfect version of the rifle.

This will be one of the sturdiest-feeling weapons as everything is designed in tight tolerances. All of our rifles are equipped with HIPERFIRE (High Performance Firearms) Triggers; all are 2.5lb single stage Reflex (curved) or Competition (straight with shoe) or X2S Mod3 2-Stage; Reflex is pictured, Odin Adjustable Buffers, and Superlative Arms adjustable gas blocks.

CM10 Upper and Lower Receiver:

• SR25 Pattern though DPMS High Profile specs such as 16TPI barrel nut, barrel extension, and BCG compatibility

• CNC machined from 7075-T6 billet aluminum

• Lightweight FCG Faces and Mag-well

• Lightweight Cuts on Upper with no Forward Assist

• Pictogram style Fire/Safe engravings on both sides

• Integral trigger guard for added overall strength

• Machined (not broached) Mag-well with wide flare

• Black Tungsten Cerakote

Lower Parts:

• CM Ambi Safety

• CM Ambi Mag Release

• CM10 Pivot and Takedown Pins

• HIPERFIRE 2.5lb single stage Reflex (curved) or Competition (straight with shoe) Trigger and pins, or Hiperfire X2S Mod3 2-Stage – pictured with Reflex

• CM10 Ambi Bolt Release

• B5 Systems Black Grip

Receiver Extension:

• B5 Systems Bravo Stock – Black

• CM Milspec Buffer Tube – Black Tungsten Cerakote

• QD Endplate

• Odin Adjustable Buffer AR10

Upper:

• CM10 Low Mass Bolt Carrier Group

  • 9310 steel HPT Bolt (High Pressure Tested/ Proof)

  • 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

  • Key Staked Per Mil-Spec

  • Tool Steel Extractor

  • T.E.A Extractor Spring

  • Black Extractor Insert

  • Mil-Spec Crane O-Ring

• CM10 Ambi Charging Handle – 7075 Aluminum

• CM Rifle Length Gas Tube – Melonite

• Superlative Arms .750 Adjustable Gas Block – Melonite

• CM10 LWS 15″ MLOK Handguard – Black Tungsten Cerakote

  • 6061 Aluminum

  • Dual Taper Attachment System

  • Steel Barrel Nut

  • QD Attachment at 3 and 9 o’clock positions

  • MLOK attachment on sides and bottom

  • Full Picatinny Top Rail

• B5 Systems Black Rail Covers

• Pictured with Silencerco ASR muzzle device; can sub for Rugged, Dead Air Keymo, Yankee Hill, Q Cherry Bomb

Barrel: 7mm-08 Rem Rifle

• CM 7mm-08 Rem 18″ Barrel

• 416R Stainless Steel

• 1:9 Twist

• 5/8×24 thread pitch

• .750 gas journal

• 5R Rifling

• Tactical Grey Cerakote

Magazine:

• 1x10rd PMAG 7.62 Black

OAL: 35″ to 38.250″

OAW: 7lb/14oz with unloaded magazine and no accessories (Weight and dimensions on other tab are for shipping purposes)

LOP: 11.875″ – 15.25″

Warranty – Limited Lifetime

• Limited to original purchaser

• Limited regarding functional performance

• Limited regarding original configuration

Unleash Peak Semi-Auto Precision with the CM10 7mm-08

When performance downrange matters most, the 7mm-08 caliber stands out as a true ballistic powerhouse. Chattahoochee Munitions brings this classic, flat-shooting hunting cartridge to life in a custom, semi-automatic AR10 package engineered for modern marksmen. Designed on our rugged CM10 platform, this 18″ custom build gives you the ideal combination of long-range energy retention, rapid cycling, and exceptionally light felt recoil.

Whether you’re tracking whitetail across sprawling brush, hunting medium-to-large game, or pushing your group sizes on the long-range range, a semi-auto 7mm-08 offers unmatched tactical versatility over traditional bolt-action setups.

Precision Craftsmanship & Premium Components

Every 7mm-08 firearm built in our Roswell, Georgia custom shop undergoes rigorous assembly to ultra-tight machining tolerances. We cut out frame looseness, optimize recoil impulse, and ensure flawless mechanical cycling shot after shot:

• 18″ 416R Stainless Steel 5R Barrel: Cut with an optimal 1:9 twist rate, this barrel stabilizes a massive spectrum of 7mm-08 bullet weights. The Tactical Grey Cerakote shielding keeps environmental corrosion and field scuffs away.

• Superlative Arms Adjustable Gas Block: Big-bore AR platforms demand exact tuning. Featuring patented bleed-off technology, this gas block vents excess pressure forward, keeping receiver debris low, softening recoil, and optimizing suppressor host execution.

• Match-Grade HIPERFIRE Trigger System: Choose between the 2.5lb Reflex single-stage, Competition straight-shoe single-stage, or the X2S Mod3 2-stage trigger for an ultra-crisp break, fast reset, and pin-point trigger control.

• Odin Adjustable AR10 Buffer: Paired with our low-mass bolt carrier group, the adjustable buffer softens rearward impulse so your optics stay locked on target for instantaneous follow-ups.

Complete Technical Performance Specifications

The Ballistic Edge of the 7mm-08 Cartridge

Originating by necking down a standard .308 Winchester case to accept .284 caliber projectiles, the 7mm-08 cartridge delivers superior ballistic efficiency. High sectional density and high ballistic coefficients (BC) allow 7mm-08 bullets to resist wind drift, fly flatter, and carry formidable kinetic energy downrange while generating noticeably less recoil than traditional heavy magnums.

By pairing the time-tested performance of the 7mm-08 cartridge with our gas-operated CM10 semi-automatic action, you gain instantaneous follow-up shots without ever taking your eye off your sight picture.

Factory Customization & Suppressor Host Options

Customize your 7mm-08 rifle build directly from the workshop to match your exact hunting or shooting environment:

1. Suppressor-Ready Muzzle Mounts: Choose from top quick-detach suppressor mounts including the SilencerCo ASR Brake, Dead Air Keymo Brake/Flash Hider, Q Cherry Bomb, Rugged Brake/Flash Hider, or Yankee Hill Brake.

2. Match Trigger Configurations: Select a curved Reflex trigger for classic hunting feel, a straight Competition shoe for benchrest precision, or the crisp X2S Mod3 two-stage for extra pull control.

3. Rugged B5 Ergonomics: Built standard with a B5 Systems Bravo Stock, B5 Grip, and M-LOK Rail Covers for an aggressive, ergonomic feel in all shooting conditions.

Helpful Links & Related Products

• Explore More CM10 Calibers: View our complete line of big-bore platforms in the CM10 AR10 Collection, including our CM10 308 Win Rifle and CM10 243 Win Rifle.

• Compact Caliber Builds: Looking for small-frame tactical platforms? Check out our full line of CM15 Firearms.

• Cartridge & Silencer Info: Review technical bullet loading specs at Hornady Manufacturing or browse compatible suppressor options on the Silencer Shop Network.

Frequently Asked Questions (FAQ)

1. Why choose a 7mm-08 semi-automatic over a standard .308 rifle?

The 7mm-08 uses .284 diameter bullets which feature higher ballistic coefficients than .308 projectiles of similar weight. This results in a flatter trajectory, superior wind resistance, and noticeably reduced felt recoil—giving you faster, more accurate follow-up shots.

2. Which magazines are compatible with this 7mm-08 build?

Since the 7mm-08 shares its parent case dimensions with the .308 Winchester, it feeds reliably out of standard AR10 / SR25 7.62x51mm magazines, such as the included 10-round Magpul PMAG.

3. Can I shoot this 7mm-08 rifle suppressed?

Yes! The 18″ 416R stainless barrel features a 5/8×24 thread pitch and comes equipped with a Superlative Arms adjustable gas block. You can select your preferred muzzle host (SilencerCo, Dead Air, Q, Rugged, YHM) directly at checkout to tune for your silencer.

4. What upper/lower standard does this CM10 receiver set use?

Our CM10 receiver set is CNC machined from 7075-T6 billet aluminum following SR25 pattern dimensions and DPMS High Profile specs (including 16TPI barrel nut threads) for maximum component compatibility.

5. What is the current manufacturing lead time on 7mm-08 custom rifles?

Current custom order production time for the CM10 7mm-08 is approximately 2 weeks from purchase date to shipment to your local FFL dealer.