UTG OP3 Micro Green 4 MOA Red Dot Sight with Docter Footprint and Adaptive Picatinny Base
The UTG OP3 Micro is a compact 1x green-dot reflex sight built on the Docter-pattern footprint and paired with UTG's Adaptive Base low-profile Picatinny mount. It combines an easy-to-see 4 MOA single dot with 8 manual brightness settings, 1 MOA click adjustments, and an IPX7 waterproof rating. A durable 6061-T6 aluminum housing with a protective hood, multi-coated glass, and a long-life CR2032 battery complete a feature set geared for practical use in a lightweight form factor.
Condition
Overall Condition: Good
Bore Condition: Not applicable.
Specific Condition Notes: The glass shows slight clouding. The green dot is decently bright.
What’s Included
- Optic: UTG OP3 Micro green-dot reflex sight
- Mount: Removable low-profile Picatinny base (UTG Adaptive Base)
- Hardware: Picatinny base mounting screws/cross-bolt
This OP3 Micro uses the widely supported Docter-pattern footprint, making it compatible with plates and interfaces designed for that standard. The included UTG Adaptive Base gives you a removable low-profile Picatinny option out of the box, and the necessary mounting hardware is included.
Its 4 MOA single green dot and true 1x view provide a clean aiming point. The sight offers 8 manual brightness settings to adapt to different lighting, and windage/elevation adjust in 1 MOA clicks for straightforward zeroing. Parallax is set at infinity.
The optic is built on a 6061-T6 aluminum housing with a matte black anodized finish and a protective hood. The multi-coated glass lens is designed for clarity, and the unit carries an IPX7 waterproof rating. A CE conformity marking is present.
Power comes from a bottom-loading CR2032 battery, with a stated 20,000+ hour life at the mid setting. Controls are kept simple with a single rubberized square power button on the left front. The sight measures approximately 1.81 in (L) x 1.18 in (W) x 1.02 in (H) and weighs about 1.3 oz without the mount. UTG triangular logos are present on both sides of the hood. MPN: OP-RDM20G.




