Quick view CMMG CMMG 55A080BAB Dissent BR4 *CA Compliant 223 Rem/5.56 NATO 10+1 14.50" Black Armor Cerakote Aluminum Receiver, Magpul SGA Stock, Zeroed Drop-In Single Stage Trigger $2,148.40 $1,688.03 Picking the Br4 is easy, but choosing the right caliber to add to your safe will be a challenge. If you're leaning towards the tried and true 5.56mm, you won't do wrong with the 14.5" P&W Br4. Although the barrel is 14.5" the ZEROED SVD muzzle brake... Compare Add to Cart