Gas Blowback Airsoft (yes, that's the name of the YouTube channel), give their take on the GHK SIG 553 GBB. The GHK-553 is a realistic Airsoft replica of the SIG SG 553, featuring metal alloy construction for the receiver, rails, internals, and outer barrel, with a polymer magazine, stock, hand guard, and pistol grip. It has a 3-round burst fire mode, a gas blowback system for realistic recoil, and a quad RIS front handguard for adding accessories. The top rail is ideal for sights and scopes, and the removable flash hider allows for attaching silencers or tracers. Even the magazines are high-quality, with a gas filling system, large gas capacity, interlockable design, and a semi-transparent shell for easy round counting.