This is what makes the COPstock folder interesting:
[url]www.knoxx.com/new_products.htm[/url]
"The COPstock Folder pistol grip contains the unique Knoxx recoil-reducing mechanism and is covered in a soft synthetic finish with finger grooves to improve grip and controllability in all weather conditions. The patented recoil-reducing mechanism reduces muzzle flip in addition to taming recoil. Shooters testing the COPstock Folder with 3 inch Magnum Buckshot loads have found that there is very little discernible recoil in either open or folded positions, with virtually no muzzle flip.
With the stock folded, the shotgun can be held like a pistol, at arm's length, and fired with no pain or discomfort. Even beginner shooters could consistently hit a 12 inch gong at 25 yards with Buckshot--one-handed! Trying this feat is definitely not recommended with other folding or pistol grip style stocks."
If this item really works as advertised, I would be very hard pressed not to go out and purchase a Mossberg shotgun just for COPstock incorporation.