Any idea how to get the sight base. The screws arr shredded from the last owner

try the rubber band trick before hammering in a slightly larger bit

Hammer a flat head screwdriver into it.

The back one doesn't look bad. Are you using the appropriate torx bit? If you can't get them to go, cut a slot in them for a flat blade screwdriver with a Dremel. If you suspect loctite, a little heat from a torch will break it down.

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Cobalt speed outs. Worth ever penny.

I would invest in a set of easy outs(screw extractor). Helpful for any screw where the head is stripped.

I’m assuming it will be expensive if you f**k it up so I’d consult a mechanic or engineering guy/company. Mechanics are removing stuck/rusted in bolts all the time but whether they’d be willing to try I don’t know. Or, depending on your mechanical ability, you could try to drill them out and or use stud extractors?

Cut a slit across the center of the screw with a dremel, use a flat head to back them out.

https://www.homedepot.com/p/RYOBI-Spiral-Screw-Extractor-Set-5-Piece-A96SE51/205469301 it won’t be your last time dealing with a stripped out screw.

Looks like they tried to use a regular hex instead of the Torx bit. First get the correct size bit, there are some odd ones out there so be careful. Hit the auto parts store and get a tin of fine valve lapping compound as well. Next grind the face of the bit so it is flat, many come with a rounded tip and that can put the splines at the top of the screw and lowers the torque you can apply. Once you have the bit, take a chunk of steel rod just smaller than the center of the head and heat it red hot, put it into the screw head and let it cook a bit, that should break any type of thread locker free. Now put the bit into the head and give it a couple taps to seat it and try to back the screws out. If it tries to cam out or slip dip the tip into the lapping compound and try again. If it still won't move you could try an older trick, get it clean, then put the bit in place and apply a drop of super glue to it. Try again.

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