Perfect for AR-15 rifles Verge 15? M-LOK rails feature a skeletonized low profile design to provide the most lightweight handguard possible. M-LOK cutouts ensure compatibility with all tactical M-LOK accessories and attachments while a hard anodized aluminum construction produces durability you can trust in the field. Verge 15? M-LOK rails include a 7 slot M-LOK rail piece and hex key.Hard anodized aluminum constructionM-LOK accessory compatibleMaterial - AluminumRail type - Picatinny / M-LOKLength (in/mm) - 15 / 381in / mmWeight - 9.9oz