not sure how much I'm allowed to talk about at this time,but I've got a lot of field time with it and can tell you:
eyes function on both top and bottom
the best feeling trigger I've played with in 25 years.
great weight for a full size tactical marker with as many options.
top breech is removable
I love 3 shoot burst
mag opens when locked into marker
accurate with FS and round ball
IT"S FUN TO BUNKER PEOPLE WITH! ;]
I've got 20 plus markers and 2 of them might work!