Help with screw removal!

[u/A-U-Ahmed]

Update

I drilled those screws out, 3 of them came out easily enough that I think I did not mess up the threads. I only botched 1. I am sure 3 screws and some locktight mixed with hope will hold the rail in place

Just got myself a Mossberg 590 Shockwave. Want to mount a laser/red dot on top of the receiver but not sure what type of screw these are. Internet says they should be flathead but they are clearly not. Can someone help with some tips please?

[u/BuyRelevant1000]

Removing rounded Bolts is easy with a drill (low speed) and a 10$ kit from home depot. I've recently had to do the same and found the dewalt bits work best. Avoid the kit from Canadian tire loll.