to me, it's like putting a Cadillac bumper on a ford pinto and then calling it a Cadillac!

fyi bridger no two square jaws will fit in 550 frames.

Mb650 jaws will fit in an mb550 someone made an mb600 in a thread I seen it had 650 jaws and was based on the mb550 base

Wolfdog,
Did you grind the tips off just one side of the jaws?

With a side swiveled trap, I would let the “hooked” tips on the chain hookup side and grind the opposite side.

Wolfie do you know if this mod. also works with the 1 1/2 Vic's? I have a scrap bucket of these around from forty years of trappin'.

I was about to ask the same thing, both traps look similar

If you’d just bought Mb’s instead of Dukes, you wouldn’t need to fix anything.

Have the mbs but this thread is about taking old trashed Duke 1 1/2s and giving them new life with 450 cast jaws