Replace the Sig Sauer P226 magazine base plate with a rail adapter so you can attach the MantisX to your P226. 

Preferred if you don't have light-accommodating holster and want to train with holster draws, or if the firearm doesn't have a rail.

Two Variants
MT-2008: older model P226 (has polymer baseplate)

MT-2055: newer model P226 (has steel baseplate).  See photos to match specific model P226. 

Not compatible with 10 round magazines. 

Part numbers:  MT-2008, MT-2055