CMMG145479043
Cmmg Dissent 55A520B-Ab Br4 556 16.1 *Ca Armbk$1,833.02
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Availability: In Stock
Current Stock: Out of stock
The CMMG Dissent BR4 in 6.5 Grendel is a modern sporting rifle purpose-built for hunters and precision shooters who value flat trajectories and efficient ballistics. This 16.1-inch rifle combines CMMG's compact direct-impingement platform with the proven performance of 6.5 Grendel—a cartridge that has earned respect in both hunting and long-range competition circles for its ability to deliver consistent downrange energy with manageable recoil. Whether you're working distances or hunting medium game, the Dissent BR4 delivers the accuracy and reliability expected from a purpose-designed platform.
The Dissent's engineering reflects real-world shooting needs. A CMMG ZEROED single-stage trigger breaks cleanly for precision work, while the side-charging handle keeps your shooting hand in a natural position and accommodates optics without interference. The adjustable gas block lets you tune the rifle's reliability and recoil impulse to your preferences and ammunition, a feature that pays dividends during longer shooting sessions. The 7075 T6 aluminum upper and billet lower receivers provide the durability expected in a modern rifle while keeping weight manageable at 8 pounds.
Practical details matter: the reversible safety selector and charging handle accommodate both left- and right-handed shooters, and the integrated trigger guard eliminates snag points. The Magpul SGA stock (configured as an arm brace for compliance) provides a solid cheekweld and control. Out of the box, you'll have two 10-round CMMG magazines and a CMMG muzzle brake that helps manage recoil. The 15-inch proprietary handguard offers plenty of real estate for accessories while keeping the overall profile lean. Cerakote finish protects against the elements on long seasons afield.
This is a no-nonsense rifle for shooters who understand their ballistics and want a platform that doesn't get in the way.
| Caliber | 6.5 Grendel |
| Platform | BR4 |
| Operating System | Compact Action—Direct Impingement |
| Barrel Length | 16.1 inches |
| Barrel Twist | 1:7 |
| Barrel Contour | MT |
| Barrel Material | 4140 CM SBN |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 5/8 x 24 |
| Gas Port Location | Rifle |
| Gas Block | Adjustable, 0.750-inch |
| Upper Receiver | DISSENT, 7075 T6 Aluminum |
| Lower Receiver | BR4 Billet, 7075 T6 Aluminum |
| Handguard | CMMG 15-inch Proprietary |
| Finish | Cerakote |
| Charging Handle | DISSENT Side Charger, Reversible |
| Stock/Brace | Magpul SGA—Remington 870 Configuration |
| Trigger | CMMG ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | Reversible Cross Bolt |
| Magazines Included | (2) CMMG 10-round |
| Weight | 8 lbs |
| Overall Length | 38.1 inches |
The Dissent BR4 ships with two 10-round CMMG magazines and the CMMG ZEROED muzzle brake mounted on the 5/8 x 24 threaded muzzle.
Yes. Both the side charging handle and the safety selector are reversible, making the rifle operable by either right- or left-handed shooters.
Yes. The Dissent BR4 features an adjustable gas block (0.750-inch) that allows you to fine-tune cycling to match your ammunition and preferences for recoil management and reliability.
6.5 Grendel is known for its flat trajectory and efficient ballistics, making it popular for medium to long-range hunting and precision shooting. The 1:7 barrel twist is optimized for modern 6.5mm projectiles.
SKU: 145479045 • Width: 10.15in • Height: 3.4in • Depth: 40.9in • Weight: 10.5oz
Availability: In Stock
Current Stock: Out of stock
The CMMG Dissent BR4 in 6.5 Grendel is a modern sporting rifle purpose-built for hunters and precision shooters who value flat trajectories and efficient ballistics. This 16.1-inch rifle combines CMMG's compact direct-impingement platform with the proven performance of 6.5 Grendel—a cartridge that has earned respect in both hunting and long-range competition circles for its ability to deliver consistent downrange energy with manageable recoil. Whether you're working distances or hunting medium game, the Dissent BR4 delivers the accuracy and reliability expected from a purpose-designed platform.
The Dissent's engineering reflects real-world shooting needs. A CMMG ZEROED single-stage trigger breaks cleanly for precision work, while the side-charging handle keeps your shooting hand in a natural position and accommodates optics without interference. The adjustable gas block lets you tune the rifle's reliability and recoil impulse to your preferences and ammunition, a feature that pays dividends during longer shooting sessions. The 7075 T6 aluminum upper and billet lower receivers provide the durability expected in a modern rifle while keeping weight manageable at 8 pounds.
Practical details matter: the reversible safety selector and charging handle accommodate both left- and right-handed shooters, and the integrated trigger guard eliminates snag points. The Magpul SGA stock (configured as an arm brace for compliance) provides a solid cheekweld and control. Out of the box, you'll have two 10-round CMMG magazines and a CMMG muzzle brake that helps manage recoil. The 15-inch proprietary handguard offers plenty of real estate for accessories while keeping the overall profile lean. Cerakote finish protects against the elements on long seasons afield.
This is a no-nonsense rifle for shooters who understand their ballistics and want a platform that doesn't get in the way.
| Caliber | 6.5 Grendel |
| Platform | BR4 |
| Operating System | Compact Action—Direct Impingement |
| Barrel Length | 16.1 inches |
| Barrel Twist | 1:7 |
| Barrel Contour | MT |
| Barrel Material | 4140 CM SBN |
| Muzzle Device | CMMG ZEROED Muzzle Brake |
| Muzzle Thread | 5/8 x 24 |
| Gas Port Location | Rifle |
| Gas Block | Adjustable, 0.750-inch |
| Upper Receiver | DISSENT, 7075 T6 Aluminum |
| Lower Receiver | BR4 Billet, 7075 T6 Aluminum |
| Handguard | CMMG 15-inch Proprietary |
| Finish | Cerakote |
| Charging Handle | DISSENT Side Charger, Reversible |
| Stock/Brace | Magpul SGA—Remington 870 Configuration |
| Trigger | CMMG ZEROED Drop-In Single Stage |
| Trigger Guard | Integrated |
| Safety Selector | Reversible Cross Bolt |
| Magazines Included | (2) CMMG 10-round |
| Weight | 8 lbs |
| Overall Length | 38.1 inches |
The Dissent BR4 ships with two 10-round CMMG magazines and the CMMG ZEROED muzzle brake mounted on the 5/8 x 24 threaded muzzle.
Yes. Both the side charging handle and the safety selector are reversible, making the rifle operable by either right- or left-handed shooters.
Yes. The Dissent BR4 features an adjustable gas block (0.750-inch) that allows you to fine-tune cycling to match your ammunition and preferences for recoil management and reliability.
6.5 Grendel is known for its flat trajectory and efficient ballistics, making it popular for medium to long-range hunting and precision shooting. The 1:7 barrel twist is optimized for modern 6.5mm projectiles.
SKU: 145479045 • Width: 10.15in • Height: 3.4in • Depth: 40.9in • Weight: 10.5oz