VFC ISO556 MARUYAMA GBBR

The VFC MARUYAMA ISO556 is a gas blowback replica built on the M4 platform, designed for players who want realistic recoil and an authentic shooting experience on the field. With its robust aluminium alloy and steel receiver, combined with nylon and rubber components, the replica feels solid and well balanced in the hand – suited to both CQB and outdoor woodland games, where reliability under pressure is decisive.

Gas blowback systems differ from electric replicas by giving a physical recoil sensation with every shot, giving a more realistic training experience and better sight recovery between shots. That makes the ISO556 an obvious choice for players who have tried AEGs and want an extra layer of realism without giving up compatibility – the replica works with the widespread VFC M4 GBB magazine system.

Considered features for experienced and new players
The ISO556 combines industry-standard compatibility with practical details that make it quick to operate under pressure.

• Gas blowback system: Gives realistic recoil with every shot, creating a more authentic shooting experience than electric alternatives and helping the player practise proper sight recovery.
• Ambidextrous selector and magazine release: Equally easy to operate from either side, making the replica suitable for right- and left-handed shooters without extra adjustment.
• Adjustable hop-up: Lets you fine-tune the BB's flight path, so accuracy can be optimised for different BB weights and distances.
• Interchangeable cocking lever: Can be fitted in different positions, giving flexibility in setup depending on the player's grip and preferred loadout.
• MBT-style folding stock: Reduces overall length for transport or in tight spaces, while still giving stable shoulder support when unfolded.

Maintenance and safety
As with all gas-powered replicas, the ISO556 should be stored out of reach of children and always treated as a real firearm, even when the magazine is empty. Avoid storing the gas magazine fully charged for long periods at high temperatures, as this can affect O-rings and seals. Lubricate moving parts regularly with silicone-based oil for a long service life of the blowback system, and store the replica dry between uses.