This has the RMR footprint, which fits 80% of mid and full size pistols like Glock.
 
Item #: 
3TPRD2
UPC: 
019962533563
Description: 
RIT X3 TACTIX PRD V2 RED DOT
Brand: 
Riton Optics
Finish: 
Matte Black
Series: 
X3 Tactix PRD V2
Category: 
Reflex
Power: 
1
Objective: 
23mm
Reticle: 
Red 3 MOA Dot
Coating: 
Multi-Coated
Windage: 
1 MOA
Parallax: 
Parallax Free
Features: 
Shake Awake & Auto Brightness; Auto Off After 3 Minutes