Trulock Tactical Zombie Slayer Choke introduced at 2014 SHOT. For those who have zombie issues.
Link is to the press release, the Trulock web site hasn’t been updated at this time. It appears that this choke is a green version of their Tactical choke. I do not know how the color is applied, but I’m guessing that it is fairly durable, as the reputation of the Trulock company is very high as they stand behind their products with a money back guarantee.