Original Echo 1 E90 - Discontinued Since its inception the Echo1USA brand has strived to provide clients with uncompromising quality of products and customer service. As avid Airsoft players themselves, they are able to understand the needs of the sport and the frustration with inferior products. Echo 1's commitment to yielding the finest most affordable Airsoft Guns and Accessories on the market today is steadfast, and remains the foundation of they're continued success. The Echo 1 E90 is astounding. The plastic body is extremely durable. The magazine click's solidly into place. The selector switch is sturdy and decisive. The upper receiver as well as the rails are made of metal so that the holosights and or flashlights mounted on it are secure. The barrel features a 14mm CC threading to accept different compensators and barrel extensions. It also comes with a very solid 7mm metal bushing gearbox