How major or minor are the "adjustments" required on IMA repros?

[Griff Murphey]

Have a friend who wants a couple of them. He asked me if I knew how much adjustment may be required to get them to fit, as they advise this. "may be necessary...

[Guamsst]

Depends on the bayonet. I have had a Jap and a few Brits and they fit just fine.