FULL STEEL INTERNALS! 130% springs all around - RA Tech Npas - Heaphetus Handguard -W&s steel parts and full travel kit. -Bow master metal reunion -Hephetus steel bolt. -maple leaf hopup w/ maple leafe crazy jet barrel and quiche tdc -bow master aeg hopup + batrel -extended charging handle - skeleton Stock. - side rail optic mount -aluminum feed lip on magazine - cyma top rail cover - pts palm grip