Grey LEGO Brick

Grey LEGO Bricks are the third type of Brick used in the Ranks 8-10, and the second-to-last Brick obtained in My LEGO Network - the last one type being the Transparent LEGO Bricks.

Uses

 * 25 Grey LEGO Bricks are needed to build a Lightworm Module.
 * 51 Grey LEGO Bricks are needed to complete the Tower of Many Shields Masterpiece, since 1 is needed for obtaining the Blueprint and 50 to build the Masterpiece itself.
 * 100 Grey LEGO Bricks are needed to complete the Intergalactic Cruiser Masterpiece.

How to Obtain

 * A small chance to win from a friend's Pet Punkling Module.
 * A small chance to win from a friend's Pet Robot Module.
 * From a Symbiosis Module.
 * From a House of Gauntlets Transmuting Pool.
 * From a House of Mantles Transmuting Pool.