Reptilia has begun offering the 11.5-inch ARCA-S Handguard in Black and FDE, machined from aluminum in the United States and covered by a lifetime warranty against manufacturing defects. A 2.8-inch ARCA section at the rear mounts to compatible tripod clamps, M-LOK slots accept accessories, and a patented turnbuckle system holds the handguard on standard M4 upper receivers. The shorter option sits beside the 13-inch model and is sold on Reptilia’s website.