Echo 1 USA Airsoft is extremely busy trying to get new products out in the market. Now, they are about to release the Echo 614 in December, a playful name for an AEG that is based on the HK416, which is an improved version of the M4 assault rifles series. Originally called HKM4, it was later renamed to HK416, after Colt Industries filed a lawsuit against Heckler & Koch... "ECHO-614 will be available soon! Metal Bushing and Spring guide. Pre-upgraded just like all other ECHO1 AEG.
