CMMG Dissent BR4 Semi-Automatic Rifle 5.56mm NATO 16.1" Barrel (1)-10Rd Magazine Magpul SGA Stock Black Armor Cerakote Finish

There's a world of options when it comes to firearms and calibers, and for those who want to reach out to further targets or hunt with 5.56, the 16-inch Br4 chambered in 5.56x45mm is an awesome choice. Despite all the different caliber offerings in the DISSENT lineup, 5.56x45mm still stands as one of the most popular. Equipped with a 16.1" barrel, this Br4 is one classy carbine. Comes with (2) Magpul 10rd PMAG.

Brand: CMMG

Category: Tactical Rifles

Series: BR4 *CA Compliant

Model: Dissent

Caliber: 223 Rem / 5.56 NATO

Barrel Length Range: 16" to 16.99"

Operating System: Compact Action-Direct Impingement

Capacity: 10

Oal: 38.1"

Barrel Material: 4140CM SBN

Muzzle: CMMG Zeroed Muzzle Brake

Twist: 1:7"

Includes: 2 Magazines

Receiver Material: 7075-T6 Aluminum

Safety: Cross-Bolt

Stock Type: Magpul SGA

Thread Pattern: 1 / 2"x28

Barrel Length: 16.10"

Receiver Finish: Black Armor Cerakote

Trigger: Zeroed Drop-In Single Stage

Weight: 8.0 lbs

Stock Finish: Black

Caliber Dictionary

The Below Information Has Been Provided From Our Gun Caliber Dictionary And Is Meant For Informational Purposes Only. It Is Not Intended to Describe The Unique Specifications For This Ammunition.

The 5.56X45mm NATO cartridge was designed by James Sullivan, a member of Eugene Stoner's engineering team that developed both the M16 rifle and its original cartridge. The 5.56X45mm NATO was adopted by the U.S. military in 1964 and by NATO in 1980. With bullet diameter of .224-inch, the original M193 military cartridge used a 55-grain bullet at 3250 fps; the current M855A1 cartridge, developed by FN, uses a 62.5-grain bullet at 3020 fps, offering greater range and better penetration. The civilian version of the 5.56X45mm is 223 Remington; the cartridges are dimensionally identical but military chamber dimensions and specifications for military brass are different. It is considered safe to use 223 Remington ammo in a 5.56X45MM NATO chamber, but not a good idea to use 5.56X45mm ammo in a rifle specifically chambered for the 223 Remington. Although the stopping power of .22-caliber bullets remains controversial the 5.56X45mm has served well in now multiple generations of M16 rifles. — Craig Boddington

Specifications