The Laylax FirstFactory Block Hider is a must-have for airsoft players who love to customize their gear. This hider is highly compatible with commercial building blocks like LEGO and Megablocks, making it a versatile addition to any airsoft gun. The hider features a 14mm CCW thread, making it compatible with most airsoft guns. It also features a metal thread ring to prevent stripping, ensuring that the hider will last for many games to come. The Laylax FirstFactory Block Hider is made with high-quality materials and is built to last. If you’re looking for a great way to customize your airsoft gun, the Laylax FirstFactory Block Hider is an excellent choice.