Arsenal Inc are now selling a heavily modified AK-74-styled version of the Saiga .410 gauge shotgun.
Many of the components have been removed and replaced with AK-74 parts. These include:
* hand guards
* gas block and gas tube
* front and rear sights
* pistol grip
* muzzle brake
* Bayonet lug
Some of these modification require changes to the receiver itself. IZHMASH, who manufacture the Saiga and the official AK rifles, went out of their way to ensure that a pistol grip could not be easily fitted (so it could be exported as a sporting arm). Arsenal have also added their own two stage trigger group.
The retail price is $889. This is a premium over the standard Saiga, but you are getting a lot more.