It's a Pentagon MS2 light. Output of LED white light is 100 lumens, it's very bright!
This thing was throwing the brass so far and so hard I was tempted to turn the gas down a notch anyway, but I resisted. More range time today when my buddie 1redgmc has booked a shoot. I told him to bring his check book as I know he will want one! As for the barrel, I can see another one inch coming off the barrel, but you couldn't get another half an inch on top of that. Thanks for the comments.