Many years back I had my Browning A5 mag 12 30” full choke barrel tapped and setup for choke tubes. I received 4 chokes. Full, mod, imp and a golden full. The golden full is a truloc. I kinda remember being told that they were Winchester. There is no markings on the chokes except full, mod and imp. The three are thinner walled than any other chokes I have. They are flush to the barrel end when installed and are about 1 3/4” long. I want to purchase a new modified choke but I really don’t know what the manufacturer is or what will fit. My BPS chokes will not fit. Neither will my SBE 2 chokes. Any advice would be appreciated.