Next Level Training SIRT 20 Regular or / 20 Compact (SIG P320)Safe, effective, and innovative, the Shot Indicating Resetting Trigger (SIRT) Training Pistol was developed by shooters for shooters to complement, not replace, live fire training. The SIRT Training Pistol brings together patent pending technologies critical to improving shooting accuracy while addressing cost and liability issues. The SIRT 20 20C has the functional features of a SIG P320. This model has a metal slide with a RED or GREEN or IR