Oracle combines years of experience in the field with Monks precision machining masterminds to create the best possible sporting experience on the market today. Innovations include a single-body-pin design, locking the hopup and engine in place, ensuring a perfectly aligned shot each and everytime, a light-weight yet durable custom cut aesthetic, instantly recognisable as a Monk Customs original masterpiece. Full aluminium body (upper & lower), anodised Handguard with fiber sight (6", additional lengths coming soon) End Cap with On/Off Button 6" Aluminium Outer Barrel Trigger Housing + engine solenoid extension cables Body Pin (only 1 body pin required!) Engine and hopup alignment attachments - These work perfectly with Nexxspeed Hop units All required screws, O-rings, and Allen keys Compatible Internals: Polarstar F2 HPA Engine Polarstar Trigger Board - we recommend these with Gorilla Mini FCUs Standard M4 triggers (Speed, Maxx, Nexxspeed, Retro Arms etc) Standard M4 Mag Catch ( Maxx, Retro Arms etc) Any AEG Inner Barrel ( Da Vinci 155mm work a Dream) Any Standard M4 Hop rubber (4uantum is our go to) Hop Unit (Standard style, Maxx for P*, Nexxspeed, Retro Arms)