Echo1 SR25K which you can get at Evike.com... "The AEG comes with FREE battery & charger. There will be no guarantee and warranty on the cosmetic, free battery or free charger. High quality battery and smart charger or better charger is strongly recommended to display true performance of this rifle. Scope in image not included.

Gear Box: Ver.2
Magazine: 450 Rounds
Length: 838-920mm
Weight: 3280g
Battery: Large & Small Type Battery (Battery Included )
Muzzle Velocity: 400-450 FPS with 0.2g BBs
Package Includes: Gun, Magazine, Battery, Charger, Mock Suppressor Barrel Extension and Vertical Grip
Motor: Long Type.

Features:

• SR25 Type Rail Interface System.
• Full metal Mock QD Barrel Extension.
• Retractable Battery Stock.
• Full Metal Receiver.
• Large Type High Capacity Magazine.
• Flip up Front and Rear Sight
• Full Upgradeable Internals.
• Ergonomic Motor Grip."