Why this is in Remington Firearms Category I don't know, this is the VERY little I know about high point and taking them apart. You lock the slide and it exposed a take down pin, yes a PIN for take down! This adds to the list of why a lot of people don't like them, they are however generally reliable, fairly accurate, have a good warranty. On the downsides once you have it in your hands it's obvious, big and ugly, also insanely a take down pin to dissassemble but for the typical on sale $99 bucks purchase price a lot are sold!
I welcome someone to edit this post but this is what happens when you ask a Remington guy a High Point question, this however should get you started. I suspect after the pin is out it'll be obvious I'm sure your just looking for the typical take down lever.
The Remington guy is right. I own a Hi Point and you lock the slide exposing the pin. Your weapon should have come with a tool to remove said pin... don't loss it or your gun is worthless although some would argue that it already is.
Everyone's right about the take down pin. You can replace it with a small screw if you don't like the design. That aside, losing the provided tool isn't really a problem. You just need a drift punch to knock out the roll pin.
On the Hi Point Firearms website, there is a section for downloading product manuals, including their .380 pistols. See related link.
You need a gunsmith.
i had a hard time getting the slide retaining pin out, if you go to their website, you can find an online copy of the original manual, it tells how to clean it properly and disassemble it.
Ask a gunsmith for help
Take it to a gunsmith and ask for help
You need a gunsmith
Best to have a gunsmith teach you how.
Take it to a gunsmith and ask for help
25-50 USD
You need a gunsmith.
If you don't have a manual, find a gunsmith and ask for help
Best left to a gunsmith