trigger group

For sale is my spare trigger group for a Beretta DT10. It wouldn’t switch barrels when shooting doubles and I bought another trigger group before i had this one fixed. It has been repaired and gone through by Phillip’s Gun Smith at last years Grand and works correctly now. There is some blue...

I have had an internal selector installed in my MX trigger.. Is there a way to easily remove and install the group. As it is it is very difficult. Thanx mike