First of all yes it is plastic but a high polymer plastic, and alll the internals are metal gears , gear box and barrel. The barrel looks to be rifled also. Great hop up system this gun is a basic sight acquire pull trigger! I added a forward grip and a laser and a bright white flash light .
With .25g bbs I shot an amazing 320fps at 857 rounds a min. Stock out of the box. Comfortable just like the real one I own a ump in .45 cal and the similarity is amazing! Twins just one shoots bbs!
Even sounds kinda simular
Good r/m and fps out of box
Rating: [5 of 5 Stars!]