Gen 2 M4 Carbine Quad-Rail AEG w/ PDW Stock

Specifications
Operation: Electric Automatic
Construction: Polymer, Aluminum
Firing Modes: Semi-Automatic, Full-Automatic, Safe
Muzzle Velocity: 350 - 380 FPS with 0.20g BBs
Magazine Capacity: 300 Rounds
Gearbox: Full Metal Version 2
Battery: 9.6v NiMH Nunchuck Recommended (Battery and charger not included)
Battery Connector: Rear Wired Via Small Tamiya
Hop-Up: Yes, Adjustable
Inner Barrel Length: 343mm 
Inner Barrel Diameter: 6.03mm
Color: Black
 
Features
The Lancer Gen 2 is a full polymer construction that is very lightweight and extremely durable compared to metal or aluminum
Full metal Version 2 gearbox has a quick change spring system that allows for quick and easy spring changes to easily adjust FPS to meet any field requirements
The gearbox uses 18:1 steel gear ratio, and a 19k RPM high torque motor that provides reliable and consistent performance
Free float nylon polymer handguard with ample space for the mounting of 20mm picatinny accessories
The polished 6.03mm tightbore inner barrel offers improved range and accuracy
Full length 20mm picatinny rail that allows the user to mount optics and magnifiers as well as other 20mm picatinny accessories
Flip-up front and rear iron sights with a quick deploy mechanism allows for easier target acquisition
Retractable stock with multiple positions that meets comfort for shooters of any size
Grooved magwell with finger grooves that helps provide positive grip