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The Dissent BR4 is one of those rifles that makes people stop and look twice at the counter. It runs a familiar direct impingement system, but CMMG's bufferless Dissent platform deletes the usual buffer tube entirely. That is what lets this rifle wear a real Magpul SGA stock, the same Remington 870 pattern stock a lot of folks already know and love, on an AR-style carbine chambered in .22 ARC. The result is classic shotgun-style handling wrapped around thoroughly modern internals.
The .22 ARC cartridge delivers ballistics in the neighborhood of the 22-250 out of a small-frame rifle, which is a big deal if you chase coyotes, prairie dogs, or steel at distance. The 16.1 inch 4140CM barrel wears a salt bath nitride finish inside and out for corrosion resistance, spins bullets with a fast 1:7 twist to stabilize heavier match-style projectiles, and comes capped with CMMG's ZEROED muzzle brake to keep the muzzle planted. An adjustable .750 inch gas block lets you tune the system to your ammo or dial things back when running a suppressor, so the rifle cycles the way you want it to.
Both receivers are machined from billet 7075-T6 aluminum and finished in Armor Black Cerakote, with a full-length M-LOK handguard giving you plenty of real estate for bipods, lights, and sling mounts. The ZEROED drop-in single stage trigger breaks clean out of the box, and the reversible side charging handle plus ambidextrous controls keep things friendly no matter which shoulder you shoot from. There are no sights on board, so plan on topping the flat rail with the optic of your choice.
CMMG includes two 10-round magazines, so you are ready for the bench or the field right away, and the whole package is backed by CMMG's lifetime quality guarantee. For varmint hunters and precision-minded folks who want traditional ergonomics without giving up modern performance, this one checks a lot of boxes.
.22 ARC is a modern small-frame cartridge that produces velocities in the same neighborhood as the classic 22-250, but from a compact semi-auto platform. That makes the Dissent BR4 a natural fit for varmint and predator hunting, long-range steel, and general range work. The fast 1:7 twist barrel also handles heavier, high-BC bullets that older .22 centerfires struggle to stabilize.
The Dissent platform is bufferless, meaning the recoil system lives inside the upper receiver instead of a buffer tube. With no tube behind the receiver, CMMG can mount a Magpul SGA stock, which uses the Remington 870 pattern. You get a traditional cheek weld and familiar feel that a standard AR simply cannot offer.
No, it ships without sights. The flat Picatinny top rail is ready for whatever glass you prefer, and given the flat-shooting nature of .22 ARC, most owners mount a variable power scope to take advantage of the cartridge's reach. A quality LPVO or mid-range scope pairs nicely with this rifle.
Yes, and it is set up well for it. The barrel is threaded behind the removable ZEROED muzzle brake, and the adjustable gas block lets you tune gas flow down when shooting suppressed to keep the action running smoothly without excess blowback. That same adjustability also helps you fine-tune the rifle to your preferred ammo unsuppressed.
| UPC | 840442500009 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 28AC60C-AB |
| Action | |
| ATF Type | MODERN SPORTING RIFLE |
| Barrel Length | 16.1" |
| Caliber/Gauge | .22 ARC |
| Capacity | 10 + 1 |
| Color | Black |
| Length | 39.6000 |
| Safety | Reverse Crossbolt |
| Sights | No |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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