UTG OP3 Micro 4.0 footprint and mounting: an open-emitter reflex cut to the Docter / Noblex pattern. Which adapter plate or mount fits it, and the optics it shares a footprint with.
Updated 05 September 2026.
UTG OP3 Micro 4.0: footprint and what mount fits it
The UTG OP3 Micro 4.0 is an open-emitter reflex on the Docter / Noblex footprint. It mounts to pistol slide cut or an adapter plate, so buy the plate or mount cut for the Docter / Noblex pattern.
Footprint plate, not to scale
DesignationDocter / Noblex
Red-dot footprintMake
UTG
Model
OP3 Micro 4.0
Footprint
Docter / Noblex
Optic type
open-emitter reflex
Mounts to
pistol slide cut or an adapter plate
Shares its footprint with
Plates and mounts for the UTG OP3 Micro 4.0
Shop Docter / Noblex adapter plate on AmazonaffiliateFind Docter / Noblex adapter plate on eBayaffiliateShop Docter / Noblex Picatinny mount on AmazonaffiliateFind Docter / Noblex Picatinny mount on eBayaffiliate
Mount this optic
- ›Docter / Noblex footprintthe mounting pattern
- ›How this footprint reaches a rail or slidethe fit
- ›Red-dot footprints explainedmatch a dot to a cut
Questions and answers
What is the make of the UTG OP3 Micro 4.0?
UTG
What is the model of the UTG OP3 Micro 4.0?
OP3 Micro 4.0
What is the footprint of the UTG OP3 Micro 4.0?
Docter / Noblex
What is the optic type of the UTG OP3 Micro 4.0?
open-emitter reflex