"It's a solid, fairly well made spring gun.
~The extra spaces in the case suggest that there's a "premium" version out there.
~The gun is made of a strong solid black plastic. Despite being a UMP design, it's a representation of the 9mm and NOT the popular acp 45.
~The cocking mechanism is full metal with a plastic grip over metal for comfort. The UMP is slightly weighted. No safety switch. The spring is strong and the 'cock' is moderate. It has full-sized RIS rails. Reasonably accurate at 30 to 40 ft.
~The magazine is well-designed. You can feed its storage from bottom. When loading the magazines from storage to spring-feed, there's a locking mechanism to prevent the spring from coming up early. There's also another to prevent release before seating in the gun. This helps prevent jams.
~The plastic which holds the stock in place is very thin. Definitely detach it for storage around the house. When it fell, I could not reattach the stock."