I picked up a 1981 Ruger 10/22 for $190 the other day and had it shipped to my FFL. Unbeknownst to me, one of the scope base screws has broken off in the receiver.
I was thinking of letting it sit on PB Blast or WD-40 overnight, then in the morning sawing a slot in the top of the screw and trying to remove it by just backing it out.
If this does not work, what should I be prepared for? Can I heat it to help loosen things up or will I need to drill it out?


I was thinking of letting it sit on PB Blast or WD-40 overnight, then in the morning sawing a slot in the top of the screw and trying to remove it by just backing it out.
If this does not work, what should I be prepared for? Can I heat it to help loosen things up or will I need to drill it out?