Intended for the AR-15 platform, the Verge M-LOK 12? Rail from Firefield utilizes a skeletonized design and hard anodized aluminum construction to provide an incredibly lightweight and durable handguard. Verge?s employ a low profile design, contributing to an overall slim rifle. All M-LOK accessories are compatible with this rail system. The rail includes a 7 slot M-LOK rail piece and hex key. Hard anodized aluminum construction Compatible with M-LOK accessories Material - Aluminum Rail type - Picatinny / M-LOK Length (in/mm) - 12 / 304.8in / mm Weight - 7.6 oz