They carry fine. They shoot even better. I have one on my 20 gauge turkey gun. It really lightened the gun up over the knoxx stock I had on it and helps with recoil though the 20 doesn't kick much as it is. It does have a different drop at the comb than the field stock does though so you may need to shim the stock unless you plan on using a scope or red dot sight.
I have one on my 870 Supermag that does double duty as a slug and turkey gun. Helps A LOT when patterning or sighting in at the range. Installation is really easy as well. You might have to shave a little plastic off the channels of the fore end, but that is easily done. I reccomend the purchase!