Crimson Trace Corporation LG-401Z

Model : LG-401Z 1911 & 1991A1 Government & Commander style frames
Beam Intensity: 5MW PEAK 633NM Class IIIa Laser
Dot Size : Approximately 0.5″ diameter at 50 feet
Power Source : (2) #2032 Lithium batteries (Included)
Activation : Integrated momentary pressure switch & master On/Off switch
Finish : Rubber overmold wrap-around Front activation
Warranty : Three-year full warranty.
Fits : Most 1911’s with grip screws measuring 3 1/16″ apart