The 
G&G Two-piece Design M-LOK Rail Panels
 are polymer handguard accessories designed for airsoft rifles with an M-LOK rail system. They are typically sold in a set of four panels to cover unused rail space, offering both protection and improved ergonomics. 
 
Key features include:
Two-Piece Design: The unique design allows the panels to be easily installed onto M-LOK slots.
Material: Constructed from durable, high-density polymer, ensuring lightweight strength.
Functionality: They provide a comfortable, ergonomic grip while protecting the user's hands and the rail from scratches.
Compatibility: Designed specifically for use with M-LOK handguards, often featured on G&G airsoft models, but compatible with most standard M-LOK systems.
Packaging: Sold as a pack of 4 panels.