This CMC Triggers 4-piece M-LOK base kit is designed for AR platform rifles. Constructed from durable aluminum with a sleek black anodized finish, it provides a versatile Picatinny rail interface for mounting various optics and accessories. Utilizing an M-LOK mounting method, this base style rail accessory kit installs cleanly onto compatible handguards and includes all necessary mounting hardware for straightforward attachment. Safety Note Always ensure the firearm is unloaded before installing or adjusting rail bases or optics. Verify proper torque specifications during mounting to ensure safe and secure operation.