$1,857.99
9 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
The .300 Blackout cartridge earned its reputation by doing a little bit of everything, and the CMMG Dissent BR4 is built to take full advantage of it. At its core is a 14.5-inch 4140CM barrel with a salt bath nitride finish and 1:7 twist, capped with CMMG's Zeroed SVD muzzle brake pinned and welded in place, which brings the overall barrel length to 16.1 inches. That twist rate stabilizes everything from light supersonic hunting loads to heavy 220 grain subsonics, so the rifle stays useful no matter what you feed it.
The Dissent platform ditches the traditional buffer tube in favor of CMMG's compact action, which is what allows this rifle to run a Magpul SGA stock instead of the usual collapsible setup. The SGA gives you a solid cheek weld and a comfortable length of pull, and paired with the rifle's 36.5-inch overall length and 7.6-pound weight, the whole package balances nicely between the hands. A forward, non-reciprocating side charger replaces the standard rear charging handle and can be swapped to either side, which makes running the gun with a big optic mounted a lot more pleasant. A cross-bolt safety keeps operation simple and familiar.
Where the BR4 really shines is the adjustable gas block. Because .300 Blackout loads vary so widely in pressure, being able to fine tune the gas system means reliable cycling whether you're shooting cheap supersonic range ammo or quiet subsonics through a can. The 7075-T6 aluminum receivers wear a durable Armor Black Cerakote finish, and CMMG's Zeroed drop-in single stage trigger delivers a clean, consistent break right out of the box.
CMMG includes two Magpul 10-round PMAGs, so you're ready for the range on day one. Add a red dot or LPVO to the Picatinny rail, zero it, and this thing is right at home for hog hunting, home protection, or just burning through a case of Blackout on a Saturday. It's all backed by CMMG's lifetime quality guarantee.
Yes, and this is one of its strong suits. The adjustable gas block lets you tune the system for subsonic loads, suppressed shooting, or full-power supersonic ammo, and the 1:7 twist barrel stabilizes heavy subsonic bullets well. The 5/8×24 threads behind the brake match standard .30 caliber suppressor mounts.
No. The Zeroed SVD brake is permanently pinned and welded to the 14.5-inch barrel, bringing it to 16.1 inches overall. If you want to run a suppressor, plan on a mounting system that works with your setup or talk to a gunsmith about your options.
No, and that's by design. The Dissent platform uses CMMG's bufferless compact action, so there's no receiver extension sticking out the back. Instead, this model wears a Magpul SGA stock, which gives it a solid cheek weld and a distinctive look compared to a typical AR.
It feeds from standard AR-15 pattern magazines, and CMMG includes two Magpul 10-round PMAGs in the box. Since .300 Blackout was designed around the AR-15 magwell, feeding is reliable with quality mags. Just be sure to keep Blackout ammo clearly separated from any 5.56 mags you own.
| UPC | 840442500214 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 30A5C0FAB |
| Barrel Length | 14.5" |
| Caliber/Gauge | .300 AAC Blackout |
| Capacity | 10 + 1 |
| Safety | Crossbolt |
You must be logged in to post a review.
Reviews
There are no reviews yet.