Check out my page for other items of interest! I accept reasonable offers on most items, combine shipping when possible on multiple purchases, and ship within US only! FPS Range: 420-460 Color: Dark Earth Features: High Strength Nylon Reinforced Polymer Lower Receiver Aluminum Alloy Upper Receiver Full Metal RIS Front End Steel Alloy QD Barrel System Tightbore Precision Inner Barrel Ambidextrous Selector Switch, Magazine Release, and Charging Handle Retractable Crane Stock Integrated Adjustable Cheek Riser Full Length Top Rail for Optics Adjustable Flip-up Front and Rear Sights Newly Designed Hopup System for Optimum Accuracy and Range Mock Gas Adjustment Knob for Extraordinarily Realistic Detail Reinforced Full Metal Trigger Assembly Full Metal Bolt with Hard-Kick Recoil Spring Realistic Hard-Kick Blowback System with Locking Bolt Mechanism Length: 890mm-965mm (Adjustable) Weight: 3300g Inner Barrel: ~418mm Magazine Capacity: 30rds. Works with WE-Tech and other compatible M4 Series Airsoft GBB Magazines Muzzle Velocity: 420-460 FPS (measured with .20g and green gas) Thread Direction: -14mm Gas Type: Green Gas, Red Gas, Propane Fire Modes: Semi/Full-Auto, Safety Package Includes: Gun, Magazine Hopup: Yes, Adjustable Manufacturer: WE-Tech