All parts were replaced with aluminum parts, and I will give all parts replaced (in last pic). Comes with 16 shells and two mags that hold the shells. Even has its trades( in fourth pic). Each shell holds 30 rounds so you can imagine the amount of havoc you can create with this gun. It is Hpa tapped so unlimited air (until your tank runs out). Comes with a 3D printed adapter for a lmg mag. I know sounds dirty... I can provide a shooting vid upon request. I’m looking for some speedqb builds or a nice engine I can add attachments to the gun and even upgraded hi capas to even value for the right build.