Specifications Brand: Modify Tech Build: Full Metal Upper and Nylon Lower Receiver Operation: Gas Blowback Firing Modes: Semi-Automatic, Full-Automatic, Safety Power Source: Green Gas / Propane Muzzle Velocity: 350 - 360 FPS (w/ 0.20g BBs) Hop-Up: Yes, Adjustable Inner Barrel Length: 150mm Barrel Bore: 6.03mm Magazine Capacity: 21 Round Overall Length: 580mm (Extended Stock) Weight: 3.3 lbs Color: White Features 1:1 scale to the real gun Full metal upper and nylon fiber lower receiver High grade aluminum picatinny scope rail Adjustable hop-up system Hardened and anodized inner barrel and the newest predator hop-up bucking to achieve commendable airtightness and accuracy All-steel trigger mechanism vastly improves the durability of the trigger mechanism Enlarged opening nuzzle to improve recoil The charging handle can be turned right or left to suit right or left handed shooters Foldable one position stock that can be taken out to store extra magazine or use an extended magazine as stock Single swivel sling point Package Includes: 1x Gun, 1x Magazine, 1x Hard Shell Carrying Case, 2x Patches, 1x Sticker, 1x Allen Tool, 1x Cleaning Rag, 1x Manual