I have a Bersa Thunder 380 takedown link for you:
https://www.youtube.com/watch?v=Mmfk4OMxXDg
First off, this guy makes a lot of really good suggestion about parts handling, so if you decide to follow up with this, watch the whole clip first. But to address your specific issue with the "safety-decoct lever", pay closer attention a little after 4:00 and 6:00 on the video. He says the detent and detent spring for the safety /decock lever is permanently installed; I don't know, but I'd suggest wiggling the safety lever up and out as he suggests and then dipping the entire back end in a rust-busting solution overnight. With the lever out, you can push directly on the plunger and ascertain if the detent spring is just rusty. Of course, you'll want to make sure all that solvent is blown out of there and the rear slide parts are all properly lubricated during reassembly.
I have two of these; a Thunder 380 and the Plus model. I wish CTC made a laser for the Plus. It has a great grip and holds 15 rounds.
Good luck. let us know how you made out.
https://www.youtube.com/watch?v=Mmfk4OMxXDg
First off, this guy makes a lot of really good suggestion about parts handling, so if you decide to follow up with this, watch the whole clip first. But to address your specific issue with the "safety-decoct lever", pay closer attention a little after 4:00 and 6:00 on the video. He says the detent and detent spring for the safety /decock lever is permanently installed; I don't know, but I'd suggest wiggling the safety lever up and out as he suggests and then dipping the entire back end in a rust-busting solution overnight. With the lever out, you can push directly on the plunger and ascertain if the detent spring is just rusty. Of course, you'll want to make sure all that solvent is blown out of there and the rear slide parts are all properly lubricated during reassembly.
I have two of these; a Thunder 380 and the Plus model. I wish CTC made a laser for the Plus. It has a great grip and holds 15 rounds.
Good luck. let us know how you made out.