CZ has updated their semi-auto 1012 G2 12 gauge inertia-driven shotgun.
The Gen2 version uses extended chokes, comes with a shim kit for a perfect fit, has a an ambi (switchable) safety button, and can take extended magazine tubes. Note also the enlarged charging handle and bolt release. Price is $750.
While it feels lighter than it should, recoil was surprisingly mild, especially for an inertia gun. Many clays were broken yesterday with it without undue discomfort. The G2 is a nice improvement over the original.