Trijicon 100136 ACOG | 3.5x35mm | Illuminated Red Donut

Trijicon’s ACOG 100136 is a fixed-power, compact riflescope designed for consistent performance in bright to low or no-light conditions. It uses an illuminated Red Donut .223/5.56 BDC reticle and a robust hardcoat anodized housing for long-term durability. The optic emphasizes clarity, a both-eyes-open aiming philosophy, and always-on illumination for rapid target acquisition.

Common applications include use on tactical or utility rifle platforms and precision target or varmint shooting where a durable, low-profile fixed-power optic is preferred.

Product Specifications

• The manufacturer part number is 100136.
• The magnification is 3.5x.
• The objective lens diameter is 35mm.
• The reticle is Illuminated Red Donut .223/5.56 BDC.
• The optic coating is Multi-Coated.
• The housing finish is Black Hardcoat Anodized.
• The length is 8 inches.
• The weight is 14 oz.
• The eye relief is 2.40 inches.
• The field of view is 28.90 ft @ 100 yds.
• The adjustment size is 3 Clicks per Inch @ 100 yds.
• Adjustable parallax/feature: Dual Illuminated Red Donut 223 BAC.
• The optic is certified Waterproof, Fogproof, Shockproof.
• Proofs listed as Fog/Shock/Waterproof.
• The UPC is 719307300064.

Built to Trijicon’s standards for ruggedness and optical clarity, this ACOG delivers a compact, go-to aiming solution for shooters who want a simple, always-ready fixed-power optic. Its combination of a low-profile footprint, durable finish, and an illuminated BDC reticle make it suitable for extended field use and precision-oriented applications where a reliable, repeatable sight picture matters.