[Trijicon] Trijicon x NOVELARMS Co-Developed ACOG® 4x32 USMC RCO "Custom Reticle" (Scheduled for release in late October 2025, Pre-order)

Trijicon x NOVELARMS World's first! We are now accepting orders for the Japan-exclusive Trijicon ACOG® reticle custom order, a joint Japanese-American development!

Until now, ACOGs have been banned from sale and use in Japan because the tritium content used to illuminate the reticle exceeds domestic regulations. However, thanks to the collaboration between Trijicon and Novelarms, an ACOG that meets Japanese regulations is now available! Additionally, multiple reticle patterns are now available for "custom order." Don't miss this opportunity!

This product will be made to order by reservation from August 1st to August 18th, 2025. Please note that if the number of orders for each model does not meet the minimum production lot, production may be postponed. We apologize for any inconvenience this may cause, and ask for your understanding in advance. Products are scheduled to arrive at the end of October.

What is Trijicon ACOG®?

US Marine Corps Model : Trijicon ACOG® 4×32 USMC RCO Riflescope – M16A4

The TA31RCO is an Advanced Combat Optical Sight (ACOG) designed for the USMC's M16A4 weapon system (20-inch barrel).

The TA31RCO (Rifle Combat Optic), a model adopted by the US Marine Corps, has a 4x magnification and a range of up to 800m adjustable by the BDC. It also features a red, inverted V-shaped Chevron reticle, and the brightness of the reticle changes according to the ambient light, making it suitable for use in any lighting environment.

All US military-adopted models are waterproof to a depth of 11 meters, and only the M150CP comes with a lens cap. ACOG (Advanced Combat Optical Gunsight) riflescopes are specifically designed for military use, offering the right combination of magnification, low-light capabilities, and long eye relief for users who require rapid target identification and maximum situational awareness.

Equipped with the Bindon Aiming Concept (BAC), it allows you to operate with both eyes open. The ACOG model requires no batteries. It features fiber optics and a tritium fluorescent lamp. The fiber optics uses ambient light to automatically adjust the reticle's brightness level and contrast to available light conditions, while the tritium fluorescent lamp remains lit in dark places. It's truly "ALWAYS ON, ALWAYS READY" - always ready.

The fixed-output design minimizes moving parts for a targeted system. The quality of the glass and multi-coated lenses ensures light-gathering capabilities and a clear, distortion-free field of view. It features bullet compensation and a target-ranging reticle for decisive aiming. The rugged body is constructed from forged 7075-T6 aircraft-grade aluminum alloy, easily passing U.S. military drop-test requirements. Its waterproof performance exceeds military standards, and the dry-nitrogen-filled housing mitigates fogging, allowing it to withstand extreme cold and heat.

About Tritium

Industrial products that use tritium are regulated by the Atomic Energy Basic Act (Act No. 167 of 1957, Act on the Regulation of Radioactive Isotopes, etc.).
Under current law, the sale and use of products containing 1,000 MBq or more of tritium is prohibited.

The Trijicon ACOG® (Advanced Combat Optical Gunsight), sold exclusively by Nobel Arms, is a legal product with a tritium content set at 27 millicuries (999MBq), and is stamped with "LT" on the product itself.

【specification】
・Product No. TA31-D-100261
・Magnification 4x
・FOV 7.0°, 36.8 ft @100 yds (12.29 m @100m
Eye volume: 0.06 in³ (1,054 mm³)
・Vertical parallax-free
Reticle Diopter Fixed at -0.50 nominal +/-0.25
Eye Relief: Theoretical eye relief: 1.5 in (38 mm) / Functional eye relief: 0.9 – 1.7 in (22.9-48.3 mm) >90% FOV
・Adjustment unit: 2 clicks per inch @100 meters
・Adjustment range +/- 0°20ʼ = +/- 20 MOA (+/-5.8 mils)minimum
Optical lens coating: Fully multi-layer coating per MIL-C-14806A or Broadband Anti-Reflective Coating Red (Complies with full multi-layer coating per MIL-C-14806A or Anti-Reflective Coating)
Pupil diameter: 0.32 in (8.0 mm)
Body Material: 7075-T6 Forged Aluminum, hard coat anodized per MIL-A-8625, Type III, Class 2, dull finish, non-reflective
・Reticle illumination: Fluorescent fiber optics
- Lamp type: Tritium lamp
Tritium level: 27 millicuries or less per lamp (999MBq)
Operating temperature -46°C (-50.8°F) to +85°C (185°F)
Corrosion: Hard anodized coating protects against corrosion and battlefield chemicals.
- Withstands shock from ground soldier portable weapons platforms
Waterproof to 66 ft (20m)

The number of colors available varies depending on the reticle pattern, but there are several reticle patterns and three colors to choose from. Please choose your preferred pattern and color.