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Ultradyne USA
The Ultradyne C4 Folding Front and Rear Sight Combo 7.62/.308 is a dedicated backup and primary aiming system built for AR-10 platforms and other rifles chambered in 7.62×51 NATO and .308 Winchester. Unlike generic carry-handle knockoffs, the C4 pairs a proven circle-within-a-circle reticle with a ballistic elevation system calibrated specifically for your cartridge—giving you both reliable point-of-aim and the ability to dial in holdover from close range out to 600 yards without an optic.
Built from steel with nitride finish, the C4 folds low when not in use, staying out of the way of your primary scope or red dot without adding unnecessary height to your rail system. Front and rear sight adjustment lets you dial windage and elevation from both positions, giving you the flexibility to tune your setup however works best for your rifle. Whether you're running this combo standalone on a range gun, as an emergency backup on a scoped precision rifle, or as a fast-acquisition option on a defensive build, the C4 is engineered to get hits when it matters.
Designed for shooters who respect the value of mechanical aiming systems—no batteries, no electronics, no excuses. If you're setting up an AR-10 and want iron sights that go beyond basic aperture-and-post geometry, the Ultradyne C4 brings real ballistic capability to the rear of your gun.
| Brand | Ultradyne USA |
| Product | C4 Folding Front and Rear Sight Combo |
| Caliber/Cartridge | 7.62/.308 (7.62×51 NATO / .308 Winchester) |
| Mount Type | Picatinny rail |
| Construction | Steel, nitride finish |
| Configuration | Front and rear folding sights (combo set) |
| Reticle Type | Circle-within-a-circle |
| Ballistic Adjustment Range | 200 to 600 yards in 50-yard increments |
| Adjustment Type | Windage and elevation (front and rear) |
The C4 is designed for AR-10 platforms and other rifles chambered in 7.62×51 NATO or .308 Winchester that feature a Picatinny rail. It mounts directly to any standard top rail without adapters.
Yes. The C4 folds flat when not in use, allowing it to sit behind a primary optic. You can deploy it quickly as a backup aiming system if your scope fails or as a close-range sight when your main optic isn't practical.
The C4 features elevation adjustments calibrated for 7.62/.308, with discrete 50-yard increment settings that let you dial in the correct hold from 200 to 600 yards. This eliminates guesswork and lets you use the precise circle-within-a-circle aiming point at multiple ranges without estimating windage or bullet drop.
The C4 is sold as a combo set that includes both the front and rear sights, ready to install on your rifle.
Ultradyne USA
The Ultradyne C4 Folding Front and Rear Sight Combo 7.62/.308 is a dedicated backup and primary aiming system built for AR-10 platforms and other rifles chambered in 7.62×51 NATO and .308 Winchester. Unlike generic carry-handle knockoffs, the C4 pairs a proven circle-within-a-circle reticle with a ballistic elevation system calibrated specifically for your cartridge—giving you both reliable point-of-aim and the ability to dial in holdover from close range out to 600 yards without an optic.
Built from steel with nitride finish, the C4 folds low when not in use, staying out of the way of your primary scope or red dot without adding unnecessary height to your rail system. Front and rear sight adjustment lets you dial windage and elevation from both positions, giving you the flexibility to tune your setup however works best for your rifle. Whether you're running this combo standalone on a range gun, as an emergency backup on a scoped precision rifle, or as a fast-acquisition option on a defensive build, the C4 is engineered to get hits when it matters.
Designed for shooters who respect the value of mechanical aiming systems—no batteries, no electronics, no excuses. If you're setting up an AR-10 and want iron sights that go beyond basic aperture-and-post geometry, the Ultradyne C4 brings real ballistic capability to the rear of your gun.
| Brand | Ultradyne USA |
| Product | C4 Folding Front and Rear Sight Combo |
| Caliber/Cartridge | 7.62/.308 (7.62×51 NATO / .308 Winchester) |
| Mount Type | Picatinny rail |
| Construction | Steel, nitride finish |
| Configuration | Front and rear folding sights (combo set) |
| Reticle Type | Circle-within-a-circle |
| Ballistic Adjustment Range | 200 to 600 yards in 50-yard increments |
| Adjustment Type | Windage and elevation (front and rear) |
The C4 is designed for AR-10 platforms and other rifles chambered in 7.62×51 NATO or .308 Winchester that feature a Picatinny rail. It mounts directly to any standard top rail without adapters.
Yes. The C4 folds flat when not in use, allowing it to sit behind a primary optic. You can deploy it quickly as a backup aiming system if your scope fails or as a close-range sight when your main optic isn't practical.
The C4 features elevation adjustments calibrated for 7.62/.308, with discrete 50-yard increment settings that let you dial in the correct hold from 200 to 600 yards. This eliminates guesswork and lets you use the precise circle-within-a-circle aiming point at multiple ranges without estimating windage or bullet drop.
The C4 is sold as a combo set that includes both the front and rear sights, ready to install on your rifle.
