Latest Airsoft Package which you can have from Evike.com for US$195... "This is Railed Version of the outstanding SRC M4 Carbine. This rifle is built to last with a full metal Rail System up front, a Reinforced Full Metal gearbox, and a High Strength ABS Polymer Receiver. With factory direct pricing and world-class support Evike.com and the SRC M4 RIS will not let you down!

• Gearbox: Ver. II Full metal Gearbox. Metal Reinforced 6mm metal Bushings, M110 Spring. Marui Compatible and fully customizable.
• Fire Mode: Full Auto / Semi Auto and Safety.
• Muzzle Velocity: 340-390 FPS w/ 0.20g
• Range: 70~120 feet.
• Outer barrel thread: 14mm negative.
• Inner Barrel: 363mm.
• Hop-up: Adjustable
• Outer Barrel Thread: 14mm Negative.
• Motor: Long Type. Heat Resistance Ultra High Torque
• Magazine: 300 Round M4 Hi-Cap magazine included.
• Battery Type:Butterfly Type (wired to crane stock)
• BB: 6mm. Matrix or compatible high grade bbs recommended.
• Package Includes: Gun, 4x Rail Covers, Battery, Charger, Hicap Mag

Features:

• Steel Gears and Bushings.
• Hard ABS Polymer Sports Line Light Weight Receiver.
• Full Metal Rail Interface System.
• Aluminum Outer Barrel.
• Tokyo Marui Compatible.
• Functional Charging Handle.
• Adjustable Hopup.
• Adjustable rear sight.
• Fully upgradeable Reinforced gearbox.
• Removable Rear sight
• Retractable Crane stock

Scope and Vertical Grip not included."