Trijicon ACOG 3.5x35 Rifle Scope - .308 Amber Crosshair, Matte Finish with Picatinny Adapter

The Trijicon ACOG 3.5x35 rifle scope is a time-proven combat and hunting optic built for shooters who need fast target acquisition and reliable performance in variable light. This .308-calibrated model pairs a fixed 3.5x magnification with a 35mm objective, delivering a wide 5.5-degree field of view—roughly 28.9 feet at 100 yards—that keeps both eyes aware of threats and terrain. The amber crosshair reticle is specifically ranged for 7.62 NATO out to 1200 meters, making it a natural fit for AR-10s, M1A platforms, or any .308 flat-top rifle. Whether you're training at the range, hunting medium to long-range game, or running a tactical setup, the ACOG's legendary ruggedness and quick-handling design earn their reputation.

What sets the ACOG apart is its hybrid illumination system: fiber optics gather ambient daylight to glow the reticle during the day, then tritium takes over at dusk and night—no batteries, no buttons, no dead optic when you need it most. The matte anodized aluminum housing is forged for hard use and resists reflection. Eye relief sits at 2.4 inches, a comfortable range for most shooting positions and body armor layouts. At just 14 ounces without the mount, it won't weigh down your rifle or tire your neck on long hunts. The included flat-top adapter (TA51) mounts directly to MIL-STD-1913 Picatinny rails; the package also includes a scope cover, lens pen, adjuster cap lanyard, and the manual you'll want to read before zeroing.

The ACOG isn't a do-everything optic—it's a purpose-built tool for shooters who understand their rifle, their distance, and their target. If you're serious about .308 precision at intermediate and longer range, or you simply want an optic that will work the same way in the dark as it does in daylight, the Trijicon ACOG 3.5x35 delivers the reliability that has made it a favorite of military units and civilian marksmen for decades.

Key Features

• Fixed 3.5x magnification with 35mm objective for balanced sight picture and light transmission
• Amber crosshair reticle calibrated for .308 / 7.62 NATO out to 1200 meters
• Fiber optic and tritium dual illumination—daylight bright, night-capable, zero batteries required
• Forged aluminum housing with matte finish resists glint and impact damage
• 2.4 inches eye relief suitable for AR platforms and traditional rifle stocks
• Wide 5.5-degree field of view keeps situational awareness at closer ranges
• Includes flat-top Picatinny adapter (TA51), scope cover, lens pen, and adjuster lanyard
• 14 ounces without mount—lightweight for all-day carry

Specifications

Frequently Asked Questions

Will this ACOG fit my .308 AR-10 or M1A?

Yes—the included TA51 flat-top adapter is designed for MIL-STD-1913 Picatinny rails found on modern AR platforms and similar tactical rifles. The reticle is specifically calibrated for .308 / 7.62 NATO ammunition. If your rifle has a different mounting surface, you may need an alternative adapter.

Does the ACOG work at night without a battery?

Absolutely. The tritium inside the reticle is self-illuminating and requires no power source. During the day, fiber optics collect ambient light to brighten the amber crosshair. At night or in low light, tritium takes over. This hybrid system is one of the ACOG's defining advantages for field use.

What's included in the box?

The package contains the scope, the TA51 flat-top Picatinny adapter, a protective scope cover (TA63), a lens cleaning pen (TA56), a lanyard assembly for the adjuster caps (TA71E), a Trijicon sticker, the ACOG BAC manual, and a warranty card.

How much does this scope weigh, and will it slow down my rifle?

The ACOG 3.5x35 weighs 14 ounces without the mount—light enough that it won't noticeably burden a typical .308 rifle or add fatigue during extended shooting or hunting. The compact 8-inch length also keeps the overall package handy and well-balanced.