Specna Arms CORE Series M4 AEG (Model: M4 RIS / Black)

Specna Arms CORE Series M4 AEG (Model: M4 RIS / Black) Features Ultra lightweight fiberglass reinforced polymer receiver Licensed Rock River Arms logos Nylon fiber furniture Metal barrel assembly, flash hider, charging handle, and sling swivels ESA quick spring change system allows the spring to be changed without the need to disassemble your gun Rotary type hopup with 6.03mm tight bore barrel 380 fps spring pre-installed from factory, optional 310fps (M90) spring included to reduce muzzle velocity Quad rail handguard Specna Arms meets the expectations of clients by presenting the CORE line of products - an exceptional series of replicas that introduces a new quality to the market. An attractive price in combination with an innovative spring change system as well as high-quality materials make this replica suitable for beginners and seasoned airsoft players alike.The receiver, stock slide, handguard and a SF stock that holds the battery, as well as the pistol grip, were made from nyl