DoubleStar Front Sight Combo Tool Black. Works on 4 prong and 5 prong sight posts. Specifications for DoubleStar Front Sight Combo Tool: Manufacturer: DoubleStar Gun Type: Universal Gun Make: Universal Gun Model: Universal Caliber: Universal Fabric/Material: 1045 Steel Color: Black Length: 3 in Features of Doublestar Front Sight Combo Tool Front Sight Tool Works with 4 prong and 5 prong sight posts Package Contents: Doublestar Front Sight Combo Tool The Doublestar Front Sight Adjustment Tool AR756 is a quality addition to the DoubleStar lineup. For more great deals on Sight & Optic Tools by DoubleStar please browse our DoubleStar Gunsmithing Equipment page. What firearm models does the manufacturer say DoubleStar Front Sight Combo Tool is compatible with? The manufacturer says that DoubleStar Front Sight Combo Tool is compatible with UniversalDoubleStar AR756: Front Sight Combo Tool Black