Just a note if do put these on a regular 870 barrel they look a little stupid because the barrel ring is farther back on the MCS. To make it look like a MCS you will have to heat the ring up and re silver solder it back on. If you can't do it yourself Casey at Tac Ord can he's done lots. Or if you want a new barrel Dlask will make you one, just remember to tell them is for a MCS. They can make you a 10" barrel if you like, just like the MCS.