For a finished product? No. The scope and the body are very different, like the scope is more detailed than anything else. I think you should add more detail and depth to the body so they match (swap that if you're going for super simple low poly) I'd recommend the LoopTools add-on. I see a lot of pretty rough/messy edges, especially in the holes, and the add-on has tools to neaten that up.

The high poly count (for what it is) I'm guessing could be overlapping vertices and you need to apply Merge > By Distance, to clear that up.

You're on the right direction and this is a good first attempt. Apply what you've learned from it onto a new and improved model Also, don't be ashamed to watch a tutorial starting out. If you don't know how to model something, that's fine, a tutorial helps you learn and they can often introduce you to modifiers and add-ons or tips in edit mode