I have followed the staking procedure in TM9-1276 Cal. .30 Carbines M1, M1A1icon, M2, and M3 both to decrease the size of the dovetail and to stake in place on multiple carbines with no trouble or chips.

Unless IMI receivers are more brittle than US GI ones, there should be no problem.

Disclaimer: If your nickname is Bubba and you approach everything with a 9 lb. hammer swung with all the force you can muster do not attempt any gunsmithing.

Sight pushers are very nice, but a brass drift also works, especially if you are careful how tight you make the dovetail.