Description
Trijicon ACOG RCR Features and Performance
The Trijicon ACOG RCR combo is built for shooters who want a proven fixed-power combat optic paired with a rugged closed-emitter red dot for close-range speed. This TA31-C-100813 configuration combines a 4×32 ACOG with a red chevron .223/5.56 BDC reticle and a piggybacked 3.25 MOA RCR red dot, making it a strong fit for defensive rifles, training carbines, and general-purpose 5.56 setups.
The main optic uses fixed 4x magnification and Trijicon’s Bindon Aiming Concept to support fast target acquisition while still giving the shooter magnified capability at distance. Its red chevron reticle is calibrated for .223/5.56 and uses fiber optic and tritium illumination, so the ACOG portion does not rely on batteries for normal use. The included RCR adds a closed-emitter LED red dot for rapid close-range engagement and improved protection from debris and weather.
Built from forged 7075-T6 aluminum, this optic package is designed for hard use in demanding conditions. The 4×32 ACOG body stays compact for its capability, while the included thumbscrew mount keeps the setup ready for compatible rifle platforms. Shooters who want one optic package that covers close work and longer shots often gravitate toward this ACOG and RCR combination.
With a .223/5.56 BDC reticle, battery-free ACOG illumination, and a secondary 3.25 MOA red dot on top, this setup gives the shooter a versatile dual-optic solution in one field-ready package. The Trijicon ACOG RCR is a strong option for users who want magnified precision with a fast backup aiming solution for closer engagements.
Browse our Trijicon optics selection and shop more riflescopes on our site.
For manufacturer details, see Trijicon’s official product page and browse more options in Trijicon’s ACOG combo lineup.
Details
- Manufacturer Part Number: TA31-C-100813
- Series: ACOG / RCR Combo
- Main Optic Magnification: 4x
- Main Objective Lens Diameter: 32 mm
- Main Reticle: Red Chevron, .223/5.56 BDC
- ACOG Illumination: Fiber Optics / Tritium
- Secondary Optic: Trijicon RCR
- Secondary Reticle: 3.25 MOA Red Dot
- RCR Illumination: LED
- Housing Material: 7075-T6 Forged Aluminum
- Mount Included: Thumbscrew / Colt Knob Mount
- Color: Black
- Water Resistance: Waterproof to 20 m










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