Another premium Gas Blowback under the Viper Tech brand at CWI Airsoft. This takes the US Navy SEAL SOPMOD Mk18 Mod0 with M4A1 Colt Markings at the lower receiver and fully licensed from CyberGun. It comes with an LMT SOPMOD Style Buttstock and a Full Stroke. Full Travel Short Space and it claims it can provide heavy recoil even in winter. Price is US$872.64 with a CO2 magazine included.