ADE RD3-012-PRO Series Motion Activated/Shake to Wake DELTA PRO Red Dot Sight with Multi Reticle System + Optic Mounting plate/adapter for Ruger Mark 1,2,3,4, I,II,III,IV,IV-Lite,22/45 pistol

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Comes with mounting plate to connect red dot sight to Ruger Mark I, II, III, IV, IV-Lite, 22/45 P85 Pistol and also a standard picatinny mount. 

This optic plate is designed to attach to the two existing holes on the top of Ruger Mark Slide. No need to replace the rear sight and allowing user to co-witness the rear sight. 

 The plate fits following models. 
Mark I – MUST confirm it has drilled/tapped holes
Mark II – MUST confirm it has drilled/tapped holes
Mark II 22/45 – MUST confirm it has drilled/tapped holes
Mark III Standard
Mark III Bull Barrel
Mark III Competition
Mark III Hunter
Mark III 22/45 Lite
Mark III 22/45 Target
Mark III 22/45 Threaded Barrel
Mark III 22/45 Bull Barrel
Mark III 22/45 Hunter
Mark IV Standard
Mark IV Target
Mark IV Hunter
Mark IV Competition
Mark IV Tactical
Mark IV Hunter
Mark IV 22/45 Lite
Mark IV 22/45 Tactical


ADE is releasing the PRO SERIES for ADE RD3 series that fits a varieties of popular optic footprint on the market. The additional features that the PRO series includes are Multi Reticle Technology(select models),  Motion Awake System and are a new cosmetic redesign by ADE in Oregon City, Oregon.


Top load System, no need to Remove the sight to change the Battery. Comes with Red dot, tool, removeable picatinny plate with two screws, cover, lens cloth and instruction manual. Fits pistol optic plate/cut that is compatible with Doctor/Vortex Venom/Burris Fastfire footprint. Does NOT fit optic plate/cut for RMR, Shield RMS type footprints.


The ADE Delta PRO(D3-012PRO) has Motion Activated System technology. While Delta PRO is turned on, the red dot illumination goes to sleep after five minutes of inactivity, but when any motion or vibration is detected, it instantly switches on illumination at the previous brightness setting.


The reticle can be switched between a 32 MOA circle with 2 MOA dot, a 2 MOA dot only, or a 32 MOA ring only at the push of a button. Better yet, the same LED projects both reticles, so no re-zeroing is necessary. Operates with a single CR1632 battery. Press and Hold the DOWN switch for 3 seconds to manually turn on/off the power. Press and Hold the UP switch for 3 seconds to change reticle. Quick press Up/Down switches to adjust brightness.


1.75" length x1.25" width x1.15" height. IP67 Waterproof. The lens is coated with multi-coating to eliminate glare and provide a high level of performance in low light.



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  • ADE RD3-006 Huracan,RD3-009 Crusader,RD3-012 Delta, RD3-013 Bertrillium fit optic cut/plate that is compatible with Vortex Venom/Burris Fastfire/Doctor footprint. RD3-015 Zantitium, RD3-028 Ares fit plate(does NOT fit slide due to larger size) that is compatible with Vortex Venom/Burris Fastfire/Doctor footprint.

    Please note: Some aftermarket slides have a precise optic cut based on the curved edge/corner of Vortex Venom, one of the common slide manufacturers is PSA Dagger(with Doctor cut). ADE and other brand red dots do NOT have the same curve as Vortex Venom, therefore ADE RD3-006, 009, 012, 013 do NOT fit the aftermarket slide with CURVED vortex venom optic cut. ADE red dots with Doctor footprints only fit squared optic cuts that accept standard Doctor Footprints.

    ADE RD3-018 Spike, RD3-021 Nuwa(and RD3-021Pro NUWA Pro) RD3-030 Apollo fit optic cut/optic plate that is compatible with shield RMS/RMSC/Deltapoint Pro footprint.

    ADE RD3-021c NUWAcc fits optic cut/optic plate that is compatible with Trijicon RMRcc footprint

    ADE RD3-019 Stingray, RD3-020 Raptor, RD3-023 Valkyrie, RD3-029 Trumpet fit optic cut/optic plate/ that is compatible with Trijicon RMR/SRO/Holosun 407C/507C footprint