The MCP 556 is an elegant piece of equipment that boasts a patented CHFS stock system, which allows for a battery to be stored in the folding stock, making it particularly useful in confined spaces. The rifle has a polymer body and stock, as well as an M-Lok Rail. It also features a 233mm inner barrel, a 105 rd 556 style mid-cap magazine, flip-up sights, a rotary hop unit, a G&G Mosfet and ETU, a quick change spring system, and safe, semi, and full auto firing modes. Its overall length ranges from 252.80mm to 709.60mm and it weighs 2650g.