Speedboi Airsoft talks about the G&G SSG-1, the first airsoft gun is dedicated for speedsoft use and much derided by other players. This looks to be HPA-tapped. The G&G SSG-1 has a reinforced polymer billet style receiver and a unique outer barrel with an integrated accessory rail. It features an ambidextrous magazine catch, an integrated MOSFET with programmable full-auto and 3-round burst capability, and a variable angle stock that can pivot into different positions. The 6 position retractable stock is attached to an ergonomic motor grip, and the 20mm M1913 Picatinny compatible railed upper receiver allows for the attachment of optics.