This new gas blowback M4A1 airsoft rifle from Viper Tech incorporates most of the of the 2011 versions and customised by having a good number of the Magpul PTS furniture kit on it. Except Stock, Pistol Grip, Rear Sight & Handguard, this AEG is entirely metal. This costs a hefty US$708.00 at eHobby Asia and it does not yet include shipping costs.

"VIPER TECH M4A1 GBB Rifle Features:

• High Quality Metal Receiver (Engraved 'Viper' Marking on Body)
• CNC Steel Made 14.5inch One-Piece Outer Barrel
• 6.04mm Inner Barrel (AEG Type Compatible)
• Adjustable One-Piece Design Hop-Up Chamber

MAGPUL Custom Works:

• MAGPUL PTS MOE® Stock (MAGPUL-033) - featuring Friction Locking Function and the Ambidextrous Sling Mount Connection Points
• Magpul PTS Back-Up Rear Sight (MAGPUL-076) - Spring Loaded Flip-Up system, release lever can be reached on left, right & top position
• MAGPUL PTS Pistol Grip (MAGPUL-047) - Storage Compartment for small objects or batteries
• MAGPUL PTS MOE® Polymer Trigger Guard (MAGPUL-052) - Shallow V Shape best use of gloves
• MAGPUL PTS MOE® Handguard (MAGPUL-036) - Remove lower part to mount grenade launcher or other barrel-mounted type accessories
• Beta Project 30rd MAGPUL PTS EMAG Magazine

New Design 2011 Version Upgrade internal Parts:

• GFPA`11 (VIPER TECH 2011 Version CNC Steel Gas Firing Pin Assembly)
• 2011 version Replica Steel Hammer
• 2011 version Full Stroke Hammer Spring
• 2011 version CNC Hammer Bearing
• Hammer Pin
• Hammer Pin Fix Coil Spring
• 2011 version Bolt Catch

• Opening the bolt cover to adjust HOP UP
• Aluminum Made 14mm Clockwise Flash Hider
• Sling mount can be installed with any single, 2- or 3- point tactical sling
• Remember to check out our Store for accessories"