This may well be, however, as a satisfied user of Night Fision sights, I contacted them several weeks ago to inquire if they will be offering their Accur8 sights for the BG2.0 any time soon. Their prompt reply indicated they hope to have the Accur8 product for the BG2.0 on the market around...
Bingo! We used simunitions in several Model 10's for force-on-force training during my time as instructor/trainer for an armored car company in Denver, some 20 years ago. The pictured chamber inserts were instantly recognized and brought back memories of some interesting and fun times in my life.