The Trijicon ACOG 3.5x35 rifle scope is a combat-proven optic built for shooters who demand reliability in the field. This compact, rugged scope pairs a 3.5x magnification with a 35mm objective to deliver a bright sight picture across changing light conditions—from bright daylight to low-light scenarios. The green crosshair reticle is factory-calibrated for .308 Winchester (7.62mm) cartridges, with ranging marks designed to extend your effective distance to 1,200 meters on flat-top Picatinny rail systems. If you're running an AR-10, precision rifle, or any modern sporting platform in this caliber, the ACOG brings the durability and optical clarity that have made it a standard among military and law enforcement units.
What sets this scope apart is its dual-illumination system: fiber optic elements gather ambient daylight to keep the reticle visible in bright conditions, while tritium provides automatic glow when the sun goes down. No batteries, no switches—just a reticle that's ready whether you're hunting at dawn or working a low-light range session. The green illumination is clean and easy on the eye, reducing glare and maintaining natural contrast against most backgrounds.
Built for duty, the ACOG features a forged aluminum housing that will survive years of hard use. The scope ships complete with the TA51 Picatinny adapter, lens cleaning tools, adjustment cap lanyard, and protective scope cover—everything you need to mount and run it straight out of the box. Eye relief of 2.4 inches keeps you safe behind the scope during recoil, and the fixed 3.5x magnification means no moving parts to fail or lose zero.
| Magnification | 3.5x |
| Objective Lens Diameter | 35mm |
| Exit Pupil | 10mm |
| Eye Relief | 2.4 inches |
| Field of View @ 100 Yards | 28.9 feet |
| Field of View (Angular) | 5.5 degrees |
| Adjustment @ 100 Yards | 3 clicks per inch |
| Reticle Type | Crosshair |
| Reticle Color (Day) | Green |
| Reticle Color (Night) | Green |
| Calibration | .308 Winchester (7.62mm) |
| Illumination Source | Fiber Optics & Tritium |
| Bullet Drop Compensator | Yes |
| Length | 8 inches |
| Weight (without mount) | 14 oz |
| Housing Material | Forged Aluminum |
| Mount Type | TA51 Picatinny Adapter (included) |
The ACOG ships with the TA51 Picatinny adapter for flat-top receivers, a protective scopecoat, LENSPEN cleaning tool, lanyard assembly for the adjuster caps, manual, and warranty card. Everything you need to mount and use the scope is included.
The ACOG 3.5x35 with .308 calibration and included TA51 adapter works on any modern Picatinny rail system. It is designed for .308 Winchester (7.62mm) chambered rifles, including AR-10s, bolt-action precision rifles, and other flat-top platforms that accept standard Picatinny mounts.
Yes. The scope uses a combination of fiber optics for daytime illumination and tritium for night vision. The tritium glows automatically in low light without any battery, charging system, or user input required.
The ranging reticle is calibrated to support shooting out to 1,200 meters on .308 Winchester cartridges when mounted on a flat-top rifle platform.
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