Guntec USA AR-15 Charging Handle w/Gen 1 Latch. 56 Cal Specifications for Guntec USA AR-15 Charging Handle with Latch: Manufacturer: Guntec USA Finish: Anodized Fabric/Material: 6061-T6 Aluminum Gun Model: AR-15 Condition: New Package Contents: Guntec USA AR-15 Charging Handle with Latch What firearm models does the manufacturer say Guntec USA AR-15 Charging Handle with Latch is compatible with? The manufacturer suggests that Guntec USA AR-15 Charging Handle with Latch is compatible with AR-15GUNTEC USA CHARGE-L: AR-15 Charging Handle w/Gen 1 Latch