I have bought them in 20 and 12, I have never seen them in 16 gauge. I found them at Brownells, give them a call and see if they make one for the 16. Browning makes one and there is another company that makes them as well. For the likes of me, I can't remember there name. But I typed rifled choke in the Brownells search engine and they poped up. Good Luck.