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Description
A 4x32 ACOG Army RCO riflescope with a green chevron BDC reticle and tritium/fibre optic illumination, built for the M4 weapon system and professional users.
This Advanced Combat Optical Gunsight (ACOG) is designed for the US Army's M4 weapon system with a 14.5" barrel. It offers 4x magnification with a 32mm objective and a green chevron reticle with bullet drop compensation calibrated for 0.223 (14.5 in. barrel).
Dual illumination combines fibre optics and self-luminous tritium, so the aiming point is always illuminated without batteries: tritium lights it in total darkness, while the fibre optic adjusts reticle brightness to ambient daylight.
The scope comes with the Flattop Thumbscrew Mount (TA51), a killFlash anti-reflection device and a flip cap set for objective and eyepiece.
Key features
- Battery-free reticle — Fibre optics and tritium keep the reticle illuminated day and night without the use of batteries.
- Bullet drop compensator — The chevron reticle gives quick target acquisition at close combat ranges and enhanced target identification and hit probability out to 800 metres using the bullet drop compensator.
- Both eyes open — Trijicon's Bindon Aiming Concept (BAC) supports both-eyes-open shooting for improved situational awareness.
- External adjusters — External windage and elevation adjusters need no tools.
- Fixed-power housing — The fixed-power design keeps moving parts to a minimum, in a forged aluminium housing.
- Shock-resistant construction — Proven to withstand recoil from a .22LR to a .50BMG and to pass U.S. Military drop test requirements.
- Waterproof and fog-free — The waterproof housing is filled with dry nitrogen to eliminate fogging in extreme cold and heat.
- RMR-ready bosses — Mounting bosses by the eyepiece allow a Trijicon RMR to be added; the RMR is not included.
Typical applications
- Primary magnified optic for M4-pattern service rifles.
- Military and law enforcement units needing an illuminated sight for day and night use.
- Engagements from close combat ranges to extended distances using the BDC reticle.
Technical specifications
| Length × width × height | 5.98 in x 2 in x 2.3 in (151.89mm x 50.8mm x 58.42mm) |
| Weight | 14.9 oz. (422.41g) |
| Magnification | 4x |
| Objective size | 32mm |
| Reticle pattern | Chevron |
| Day reticle colour | Green |
| Night reticle colour | Green |
| Bullet drop compensation (BDC) | Yes |
| Calibre | 0.223 (14.5 in. barrel) |
| Illumination source | Fiber Optics & Tritium |
| Power source | Fiber Optics & Tritium |
| Eye relief | 1.5 in. (38.1mm) |
| Exit pupil | 0.32 in. (8.13mm) |
| Field of view (degrees) | 7° |
| Field of view (distance) | 36.8 ft. @ 100 yds. (12.27m @ 100m) |
| Mount | Flattop Thumbscrew Mount (TA51) |
| Housing material | Forged Aluminum |
| Finish | Matte Black |
| Submersion depth | 66 ft. (20m) |
In the box
- 1 × ACOG® 4x32 Army RCO Riflescope - M4 — Green Chevron Reticle, Thumbscrew Mount, Tritium / Fiber Optics Illuminated, Matte Black
- Thumbscrew Flattop Adapter (TA51)
- KillFlash Anti-Reflection Device (TA91)
- Objective & Eyepiece Flip Cap Set
- LENSPEN (TA56)
- Lanyard Assembly for Adjuster Caps (TA71E)
- Trijicon Logo Sticker (PR15)
- RCO Manual
- Warranty Card
Model information
| Brand | Trijicon |
| Model | ACOG® 4x32 Army RCO Riflescope - M4 — Green Chevron Reticle, Thumbscrew Mount, Tritium / Fiber Optics Illuminated, Matte Black |
| MPN | TA31RCO-M150CP-G |
