My breech says a squeeking noise? Is this normal?

Yes i know i’ve been making a lot of threads .. But now that my gun doesn’t shoot as i want it to, i’m pretty much vigilant about everything that doesn’t sound right

I’ve done the first disassembly today, and noticed a tag stating “spring silencer” on the spring .. loool .. removed ! 😕

But after putting it back together, i noticed a squeeking (spelling?) noise when i cocked the gun? It sounds that classic nylon-to-metal sound. I don’t recall whether this occured before the disassembly .. is it normal ? ❓ 😯