Those are hard to find.......so try these......they are all taper, no parallel, and throw great patterns...... https://www.teaguechokes.com/us/perazzi-mx4-8-12g-flush
One more thing......type 3 chokes are just a type 2 with the knurling cut off......if there is enough space between the barrels for the knurling, the type 2 will work......it's just that instead of 1/2" of parallel at the muzzle, there is only 1/4".