Looking for the GHK M4A1 14.5" RIS Gas Blowback Rifle? Look no further as eHobby Asia got in stock and you can order via their online store. This has a full metal receive with U.S. Navy SEAL markings, steel outer barre, 20mm RIS Rail System, new hop-up system, version 6.0 hammer, 6.03 inner barrel, and stable bolt lock.