If you haven't watched the King Arms Black Rain Ordnance Series Part 1 as presented Sarah Hong, you can watch it again in the video provided here. Also, in this update from the company they have released Air Seal Nozzles and Silencer Adapters for different types of AEGs that are Marui-compatible. More of these below:

Air Seal Nozzle for MP5 / G3 / MP5K

• Item Code: KA-04-26 / KA-04-28 / KA-04-29
• Weight: 1g
• Main Material: Polyoxymethylene (POM)
• Major Color: Black

Product information:

This POM nozzle has an inner o-ring design which helps to increase velocity and provides tighter sealing. It is also more durable than standard nozzle. Suitable for MP5 / G3 / MP5K series AEG gearbox.

Air Seal Nozzle for SIG / M1A1 / AUG

• Item Code: KA-04-30 / KA-04-31 / KA-04-38
• Weight: 1g
• Main Material: Polyoxymethylene (POM)
• Major Color: Black

Product information:

This POM nozzle has an inner o-ring design which helps to increase velocity and provides tighter sealing. It is also more durable than standard nozzle. Suitable for MP5 / G3 / MP5K series AEG gearbox.

Silencer Adapter-14mm L ->14mm R / 14mm R -> 14mm L

• Item Code: KA-AD-01 / KA-AD-02
• Major Color: Black

Product information:

Precise CNC machining silencer adapter.

Silencer Adapter-Marui Famas (14mm R) / (14mm L)

• Item Code: KA-AD-FA-01 / KA-AD-FA-02
• Major Color: Black

Product information:

Precise CNC machining silencer adapter.

Silencer Adapter for Marui AUG (-) / (+)

• Item Code: KA-AD-AUG-01 / KA-AD-AUG-02
• Major Color: Black

Product information:

Precise CNC machining silencer adapter.