Trijicon ACOG TA31-C-100552 | 4×32, Green Crosshair, RMR

The Trijicon ACOG TA31-C-100552 combines a fixed 4×32 ACOG riflescope with an attached Trijicon RMR Type 2 red dot. The main optic offers a dual-illuminated green crosshair reticle using fiber optics and tritium for visible aiming in varied lighting, and the compact RMR provides a 3.25 MOA aiming dot for rapid acquisition at short distances. This configuration is calibrated for .223/5.56 ballistic holdovers and includes a TA51 flattop thumbscrew mount and a basic accessory kit.

Common applications include intermediate-range precision engagements where a fixed-power, durable optic is preferred, and close-quarters target acquisition using the RMR. The design emphasizes a low-maintenance, robust optical system suitable for sustained field use.

Product Specifications

• The UPC is 719307311800.
• The magnification is 4x.
• The objective lens measures 32mm.
• The reticle is an illuminated green crosshair calibrated for .223/5.56 BDC.
• The optic includes an attached Trijicon RMR Type 2 with a 3.25 MOA dot.
• The field of view at 100 yards is 36.8 ft.
• The field of view is 7 degrees.
• The weight is 15.1 oz (weight listed without RMR in source material).
• The eye relief is 1.5 in.
• The exit pupil is 0.32 in (8.13 mm).
• The overall length is 5.8 in.
• The housing material is forged aluminum.
• The finish is matte black.
• The illumination source is fiber optics and tritium.
• The mount is a TA51 flattop thumbscrew mount included with the package.

The TA31-C-100552 pairs a proven fixed-power ACOG reticle with a compact RMR to offer both deliberate holdover aiming and rapid target acquisition. Its sealed, multi-coated optical system with fiber optic and tritium illumination is intended to deliver a usable aiming point across a wide range of lighting conditions while minimizing moving parts. The package includes essential mounting hardware and a small accessory kit to get the optic into service quickly.