Strike Industries Extended Bolt Catch Black One Size. These Strike Industries AR15 Bolt Catches & Releases are machined from durable solid precision cast steel for years of reliable use. The Strike Industries Ergonomic Bolt Catch has a low-profile design that adds a distinctive look to all kinds of receivers. Whether you operate it with your palm or your thumb strike hard and strike fast with the Strike Industries AR Extended Bolt Catch. Specifications for Strike Industries Extended Bolt Catch: Manufacturer: Strike Industries Fabric/Material: Solid Precision Cast Steel Color: Black Features of Strike Industries Extended Bolt Catch MilSpec bolt catch engagement surfaces function with an milspec bolt carrier. Wide surface area "ping pong paddle" for faster operation. Solid Investment Cast8620 construction case hardened. Widened Bolt Catch lower lever for easier manual locking of BCG to the rear. Sleek SI Design fits forged MilSpec receivers and blends well aesthetically with many billet upper and lower receivers. Package Contents: Strike Industries Extended Bolt Catch 1 x AR Extended Bolt Catch 1x Bolt Catch Roll pin Strike Industries SI-AR-XBC: Extended Bolt Catch Black One Size