Airsoft Lefty shows his latest gas blowback rifle acquisition, the Salvo Precision MCX SPEAR LT CSAW GBBR and here is what he says about it. The Salvo Precision MCX 10.5 Spear LT CSAW GBBR is a gas blowback airsoft rifle based on the Double Eagle MWS platform. It features a 10.5-inch barrel and is designed for customization.