Here is the demo video of the upcoming EMG Noveske Gen. 4 SBR AEG from APS. Length is 10.5" with the Dead Air Flash Hider and a Noveske marked Giessele Super Badass Charging Handle... "Equipped the NEW eSilver Edge gear box SDU 2.0 chip with selectable firing mode feature:

Mode 1: Single / Full-Auto
Mode 2: Single / 3 rounds burst
Mode 3: Double Tap / Full-Auto
Mode 4: 3 rounds burst / Full-Auto
Mode 5: 3 rounds burst / 9 rounds burst"