big 5 has them for $219 for either an 18" or the combo gun with a 24" and an 18". im intersted in the combo as i already have a 1300 with 18" and would like to do some skeet/trap shoots. what is the mag capacity for the combo gun and is it a wood or synthetic stock. the ad looks like synthetic but mossbergs site only shows wood for the combo. cant get down to big 5 for a few days to take a look. where is the slide release located on the 500, is it like an 870 release? tia