First generation (MK 1) 10” barrel

[vinnimac]

I’m looking for a 10” barrel in .357 magnum for my early DE. Person sent me pics, but not sure what it should look like. The pic shows two cross slots across the top. Is that correct for MK1?

[GarrettJ]

Cross slots are not correct for a MK-I or MK-VII barrel. Those should have a solid 3/8” rail with no slots.

[The Glockodile]

The not - so - Picatinny Rails and Cross - Slots came with the later models.