Red high visibility fiber optic front sight CNC steel construction giving a durable and sturdy feature Compatible with Tokyo Marui Hi-Capa 4.3/5.1 series 2mm fiber optic rod provides quicker target acquisition Uses a socket set of screws to hold the sight on the slide firmly In the Box 1X Front Sight Specifications: Brand COWCOW Build Aluminum Compatibility Tokyo Marui 5.1 and Most Hi-Capa GBB Series Color RED California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov