Things I liked:Red dot scope, metal rails, adjustable sights, metal gears,abs handguard and stock. EVERYTHING! Things I would have changed:Absolutely nothing. What others should know:This thing is so much fun to own! I got it and immediately proceeded to shoot up the box it arrived in(after taking it out,of course)! If you want an airsoft gun that's an excellent replica for a decent price, BUY THIS!! It is totally worth it!