The Yankee Hill 285C2 Phantom Flash hider is a field-proven muzzle device built for AR-platform rifles chambered in 5.56×45mm NATO. If you run a 1/2"-28 threaded barrel and want to cut muzzle flash without the dust signature that comes with downward-facing ports, this is a no-compromise choice. The five-port design deliberately eliminates ports pointing down, so you stay sharper when shooting prone—a real advantage when accuracy matters. The aggressive front end design doubles as a brake-style tool if hand-to-hand contact ever becomes necessary, though you can also source the smooth-end version if you prefer a cleaner look.
Yankee Hill's 5C2 platform has been in service for decades, refined by shooters and operators who demand reliability over trends. This isn't marketing hype; it's a design that has simply worked, which is why you'll find it on builds across the competitive, hunting, and duty-rifle spectrum. The black steel construction handles the recoil signature of intermediate cartridges without fuss, and the threading is standard 1/2"-28—the most common spec on modern 5.56 AR barrels.
Installation is straightforward on any 1/2"-28 barrel. The package includes a crush washer, so you're ready to mount without hunting for additional parts. If you're upgrading a duty gun, building a precision carbine, or just want flash reduction that doesn't compromise your prone-position view, the 285C2 delivers the understated performance that working shooters expect.
| Brand | Yankee Hill Machine Co |
| Product | 285C2 Phantom Flash Hider |
| Caliber/Cartridge | 5.56×45mm NATO |
| Thread Pattern | 1/2"-28 |
| Platform | AR-platform rifles |
| Material | Black Steel |
| Port Configuration | 5-port design, no downward ports |
| Included Accessories | Crush washer |
The 285C2 is designed for 1/2"-28 threaded barrels only. Check your barrel's thread pitch before ordering. This is the standard specification on most modern 5.56 AR barrels, but some older or proprietary builds may differ.
Downward ports redirect blast toward the ground, which kicks up dust and debris—especially problematic when shooting prone. By eliminating bottom ports, the 285C2 keeps your sight picture cleaner and reduces the dust signature that could give away your position or compromise accuracy in low-light or dusty conditions.
Yes, the 285C2 is designed specifically for 5.56×45mm NATO. Do not use on barrels chambered in other calibers.
The package includes the flash hider and a crush washer for installation. You'll need a wrench to mount it to a 1/2"-28 threaded barrel.
Yankee Hill Machine
Yankee Hill Machine
Yankee Hill Machine
