Now in stock at RSOV.com are several DTW-Max 3 AEGs and are full metal. These AEGs, which are akin to PTWs or CTWs comes with its ECU so you can reprogram it to fire full auto, or in controlled bursts by holding the bolt release catch and trigger until two beeps are heard. From there you adjust the burst by pressing the trigger from 2 up to 30 times. Hold when you reach the desired burst mode until you hear a single beep which confirms the new mode.

G&D Full Metal DTW - Max3 Burst Adjustable (ECU) M16A4 AEG Rifle

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G&D Full Metal DTW - Max3 Burst Adjustable (ECU) MK18 Mod1 9.5" AEG Rifle Black

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