Capa killer? Solid build and room for more work. Almost all parts are like new, Shoots hot with antifreeze bulb and med. low wt original valve, 35ish rps I wanna say more (I have the 40 dollar AceTech chromo so hard to tell) old parts and what's pictured also included. Price is NOT solid Upgrades: (Upper) RGW CNC aluminum upper slide Barrel extension K-Tech Amplifier 180mm mlcj barrel Autobot 60 bucking Hadron CNC Fang plate (V1) Enhanced piston seal Antifreeze bulb 300% nozzle return spring Waldo Custom SS KIT Charging ring/Select Switch Rail add ons Upgrades: (Lower) Steel Hammer Steel rotor 150% hammer spring AAC Extended mag release TTI Adjustable trigger Replaced Knocker Lock (WE spec) Extras: Spare original nozzle 3D printed handguard Primed upper ready for paint Extra 24 rnd mag (not pictured)