Mine came with Mbergs Ultimag choke-.695 constriction.My advice would be to put on Kick Ezz' pad.I went with the second thickest they make.The thickest jumps up quite a bit more in price.With the 835 I've shot most birds with 3" 4 shot but I've taken them with both 4 and 6 shot using 2 3/4" shells to.Back in my 500 days all I ever used was 2 3/4" 4 shot.