Fostech had a few samples of the Origin shotgun with them at the Media Range day. The Origin shotgun is based off the Saiga 12, but as you can see they've made a few changes... The Origin was a project originally started by Alliance Armament, and from what I gathered, both Fostech and Alliance will be manufacturing the shotgun moving forward to keep pace with demand.
Shooting the Origin was quite pleasant, it had the familiar feel of a converted Saiga 12, but with great improvements in the areas of user interface, with a better safety, better charging handle, and better mag release. There is also a noticable improvement in the controllability of the weapon, as a result of them moving the placement of the stock up above the bore axis. It also looks pretty cool, I'm a big fan of how they machined the bolt.
Fostech is also doing a bumfire stock for AK's. This bumpfire bullpup kit, looks interesting, but I'm not sure if it's available yet...