Our take: Diamond Tactical has truly elevated the playing field for Airsoft Optics and accessories, as they have made the highest grade of Optics/Scopes/Accessories accessible to Airsoft players at remarkably low prices. Airsoft Megastore is proud to be the first in the nation to carry Diamond Tactical"s complete line of precision high-grade optics, offering them for the first time to all Airsoft players in the U.S. The Diamond Tactical DT-009 metal weaver Tri-Rail mount system is designed for M4/M16/AR15 flat-top receivers. Easily mount your optics on top, while utilizing the two side rails for lasers, lights, and other pertinent tactical accessories. This mount system offers universal fit to all weaver-equipped receiver tops. Package includes: DT009 Tri-Rail mount About Diamond Tactical: Diamond Tactical has a simple company mission: to provide Airsoft players with the highest quality optics for your weapon at the best pricing on the market. While the world of optics is a large and tricky place to navigate, Diamond Tactical has created a simple yet comprehensive line-up of precision optical sights and accessories set on the sole purpose of helping Airsoft players worldwide MAXIMIZE shooting efficiency, effectiveness, and accuracy for virtually any Airsoft weapon. All Diamond Tactical Optics are manufactured to the highest quality standards, and thus carry a comprehensive 120-day warranty against manufacturer defects in workmanship.