Trijicon ACOG 5.5x50 Rifle Scope, .223 Red Chevron Reticle, Matte Finish with Picatinny Adapter

The Trijicon ACOG 5.5x50 rifle scope with .223 red chevron reticle is purpose-built for AR and modern sporting rifle shooters who need a compact, combat-proven optic with both day and night capability. This fixed-magnification scope delivers the speed and simplicity that made the ACOG a standard across military and law enforcement—no batteries to die in the field, no complex turrets to fiddle with when seconds count. The 5.5x magnification and 50mm objective balance light gathering with a manageable sight picture, while the dual-illumination system (fiber optics by day, tritium at night) keeps the chevron reticle visible in any reasonable condition without external power.

The .223 calibration and chevron reticle design give you built-in ballistic holdovers; the tip zeros at 100 meters, and the base of the chevron is 5.53 MOA wide—roughly 19 inches at 300 meters—allowing you to range and aim at known-distance targets quickly. This is practical glass for hunting, tactical training, 3-gun, or duty work where you need reliability and speed over precision turrets. The scope mounts to any Picatinny rail via the included TA51 flattop adapter, and the matte aluminum housing resists glare and corrosion. At 25.6 ounces with mount, it won't weigh down a modern carbine.

Trijicon includes a full kit: a protective scopecoat, lens pen, lanyard assembly for the adjuster caps, manual, and warranty card. This isn't a long-range competition scope—it's a workhorse optic engineered for reliability and speed in field conditions, with the optical clarity and light transmission Trijicon is known for.

Key Features

• Fixed 5.5x magnification with 50mm objective—compact and rugged
• Dual-illumination reticle (fiber optics + tritium) operates day and night without batteries
• .223 calibrated chevron reticle with built-in range estimation for rapid target engagement
• Forged aluminum housing with matte finish—lightweight and corrosion-resistant
• TA51 flattop Picatinny mount included; works on modern AR platform rifles and mil-spec rails
• Complete accessory kit: scopecoat, lens pen, cap lanyard, and documentation
• Short 2.2-inch eye relief and 9.1mm exit pupil optimized for carbine distances

Specifications

Frequently Asked Questions

Will this ACOG fit my AR-15?

Yes. The scope comes with the TA51 flattop mount, which clamps to any Picatinny rail on your AR receiver or rail system. It's the standard Trijicon mount for modern rifle platforms.

Does this scope require batteries?

No. The reticle is illuminated by a combination of fiber optics (which gather ambient light during the day) and tritium (a self-luminous isotope for low-light and night use). No external power source is needed, so it's always ready.

What's the difference between the chevron reticle tip and base for aiming?

The chevron is designed so the tip zeros at 100 meters. The base of the chevron is 5.53 MOA wide, which equals roughly 19 inches at 300 meters. This allows you to estimate range and hold over for known-distance targets without dialing turrets—useful for quick engagement and field shooting.

What comes in the box?

The TA55 package includes the scope, TA51 flattop adapter, protective scopecoat, lens pen, cap lanyard assembly, Trijicon logo sticker, manual, and warranty card.