I wouldn't be worried it probably just had a rough shipment, if the gun works i think it should be fine.
Must have been quite the bumpy ride, enough to unwrap a dart and load it into the gun even.
You should just take it back. It might work fine now, but why did the last person return it? Unless you like paying full price for something that is used.
I think the last person that returned was probably not of the highest level of intelligence and the reason that they returned it was that there was a dart jam and they assumed it was something they could not fix themselves, not that there was an actual problem with the gun.
The wood grips are super sexy! Did you simply just place them in stock grooves in the gun and glue them in or was there some sanding of the gun involved to get them to fit well?
Both are double barrel guns, and can shoot a single dart at once or two at one time. I have the BuzzBee Double Shot and it just broke yesterday. So I would like to know what one I should get next.
I own both and I would advise getting the barrel break. Much faster (no shells) and you receive the handy tactical rail attachment.