|
G&P metal bodies usually come with a small instruction sheet with pictures of how to disassemble your old receiver and re-assemble the new one. None of this should be a mystery.
You installed the spring for the dust cover "wrong", i.e., you didn't wind the spring to put tension on it, so it's just sitting there. Personally, I hate seeing ARs being used with the dust cover closed, so I swap mine out for the "always open" realistic-looking ones.
The small magnet-looking disc is a cover for the fake fire selector (on the right side of the receiver): see picture #45 in your instruction sheet. (you have to glue it on, btw)
__________________
|