They are relatively new a few years I think I only EC 804 Iran it stock for about 6 months was a good gun good build dust cover locks back to adjust hop up which is nice solid build no wobbles I'd recommend it good mid-grade gun for the price I have since dropped about 1,500 into it all that's left is the outer Barrel handguard and body which I'm going to change but I will be purchasing the blank EC body
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