Seems pretty sick, nice to see that somebody has FINALLY realized that AR15/M4 style stocks don't work in paintball without modification. Such as the few wonderful inches of drop on the DAM. This is definitely going to be a someday marker for me.
Snapping over the top of bunkers is one of my favorites. Usually you only see stock class or warp feed guys doing it, but somebody with a center feed can pull it off with great success every once in awhile.
Are the barrels the old sterling threads or the new spyder threads? Because if these are the old threads, I have a sterling that I would love to get a new barrel for. Assuming you're interested in parting out.