Manufacturer: Troy Industries SRAI-SIG-50BT-00
The Troy Sig 556 pistol rail provides the optimum solution to upgrade the standard Sig sights with Troy Folding BattleSights. This Rail accepts all accessories designed for the M1913 Picatinny rail system, including Troy Modular Combat Grip and Troy BattleRail Panels.
Specifications and Features:
Installs easily with no special tools
Creates the ultimate Sig 556 rifle or pistol
Troy BattleRails are designed to fit Sig 556 receivers with three rail screws