I am looking at the CZ 712 for possible 3-gun, but to get my money's worth, I would like to use it for duck hunting. Can you swap barrels on the CZ 712 ALS from 28" to the 20" utility barrel? Will it function, or is the Utility configured for the shorter barrel? If they are interchangable, does anyone know where you can purchase a separate 20" barrel. CZ-USA and custom sites don't list any thing. Searches don't turn up much either.
-Kevin