Wanted: 🔴 Screw 🔴 that hold the flash deflector for my 22 LR Squires Bingham 20P

As the title say, I need one screw. the photo makes it clear which part I mean. I'm looking for the small screw that secures the black shell/flash deflector to the receiver.

Infos from IA:

It is very likely a metric thread, since Squires Bingham/Armscor firearms were manufactured in the Philippines, where metric fasteners are commonly used. However, I would not rely on that assumption to buy a screw, because I have not yet confirmed the exact thread size and pitch for the Model 20P flash deflector screw.

Please message me if you have one in stock. 

Thanks for your time...

PiLo