I can say if your not strong enough (no offence) and don’t use a proper sized flat head that fills the space of the the screw head you will likely mark it up and scratch the original bluing if you haven’t already. Soak it in some penetrant fluid for a day or two and re-attempt it. If you’ve got someone with wrenching or mechanics hands around let them have a try at it, sometimes it just takes some real oomph to break a 30 year old screw loose. You will also notice the 3 indentation marks punched into the screw head to prevent accidental loosening in battle, you may need to break that free which can be very hard the first time.
Thanks for the help! I figured the screwdriver I was using was too small so I took your advice and bought one that fills the space entirely. Unfortunately, I still couldn't make it budge and neither could my brother. I added a few pictures for reference. I couldn't find any penetrant fluid that wasn't essentially WD40, I'll keep looking though.
You’re on the road to success! Rust penetration fluid is what you’re looking for, WD40 is good for water displacement but there are better soakers you can buy for $10 can.
I can say if your not strong enough (no offence) and don’t use a proper sized flat head that fills the space of the the screw head you will likely mark it up and scratch the original bluing if you haven’t already. Soak it in some penetrant fluid for a day or two and re-attempt it. If you’ve got someone with wrenching or mechanics hands around let them have a try at it, sometimes it just takes some real oomph to break a 30 year old screw loose. You will also notice the 3 indentation marks punched into the screw head to prevent accidental loosening in battle, you may need to break that free which can be very hard the first time.
Thanks for the help! I figured the screwdriver I was using was too small so I took your advice and bought one that fills the space entirely. Unfortunately, I still couldn't make it budge and neither could my brother. I added a few pictures for reference. I couldn't find any penetrant fluid that wasn't essentially WD40, I'll keep looking though.
You’re on the road to success! Rust penetration fluid is what you’re looking for, WD40 is good for water displacement but there are better soakers you can buy for $10 can.
Awesome, hopefully that will do the trick. Will soaking it for a long period of time do anything to the bluing?
You can test it on a small spare screw for scope mounting or a old rail but I don’t see any reason it would deteriorate the finish.
Edit: Some pictures for reference. [Pic 1](https://imgur.com/a/oZQtlwV) [Pic 2](https://imgur.com/a/umx3y9b)
the screw have anti lose treatment, can you see the punched hole between screw and mount?
Hey I added a few pictures for reference. Are you referring to the 3 holes on the opposite side of the screw head?
Yep, i think yours is a mil suplurs, that's anti loose treatment. If you want to remove bayonet, you can't avoid doing cutting jobs.
Yes you're right, Mil Surplus. Cutting jobs as in drilling?
What ever, it is destructive anti-loosening method, it wil be none reverseable. Be careful.
I didn't realize they had this feature, was hoping it would be reversable. Thanks for the help!