Posted from an email I received from Classic Army:
"Please be informed that we will launch M15A4 Carbine, M15A4 Tactical Carbine & M15A4 Rifle using a real gun logo ~ Armalite, replacing the old M4A1, M4T and M16A3. Also there will be some new spare parts in the new rifles.
We will inform you when they are ready. The expected release day will be at the end of March.
Improvement of M15A4 CARBINE
² Metal Body
I. ‘Armalite’ Real Gun Logo
II. Laser Script
² Improved material of Hard Grip, Foregrip and Retractable Stock
I. Change from Plastic to Nylon & Glass Fiber
² Individual Series no. will be added
² New Gears will be used
² Re-enforced Adaptor Ring for Foregrip
² New Version of Hop-up Chamber & Rubber
² High Speed & High Torque Motor
Improvement of M15A4 Tactical Carbine and M15A4 RIFLE
² Metal Body
I. ‘Armalite’ Real Gun Logo
II. Laser Script
² Harder Fixed Stock which can use 10.8 V battery
² Individual Series no. will be added
² New Gears will be used
² Re-enforced Adaptor Ring for Foregrip
² New Version of Hop-up Chamber & Rubber
² High Speed & High Torque Motor