Another release from SIG Sauer, the SIG TREAD 716i, perhaps something you want to have an airsoft version of? Tactical Fan Boy has a short video it and the following is the description from the company... "Familiar handling, unfamiliar power, SIG SAUER has taken the proven features of the SIG516 and applied them into a potent AR-based rifle chambered in 7.62 NATO. Utilizing the tried and true Direct Impingement System, an M1913 Mil-Std rail, free-floating barrel, aluminum forend, and telescoping stock, the SIG716 is the rifle of choice when you require the power of a larger caliber carbine."