Started with a old 870 20 ga Express with Fed HW 7's and killed several birds, next year added the M4 style stock, skipped year due to broken leg, then before last season switched to TSS and IC .555 and killed 3 birds with it although the POI was off, since last spring added a SumToy mount and FF3 and had the barrel cut to 18.5" and re-threaded. She is light, handy, I can adjust the POI to the POA and as long as the pattern didn't change (haven't shot yet) will put 300+ in the 10" at 40 yds. Took me a while to lay my 10 ga BPS down for good but sold it the year broke leg so all in with sub 12 bores now and love it after being accustomed to toting a fence post around.