Luth-AR Barrel Vise Jaws AR-15/M16 Silver Brushed Silver. The Vice Jaws uses 2 V blocks that clamp into your bench vise to simplify assembly work. Specifications for Luth-AR AR-15/M16 Barrel Vise Jaws: Manufacturer: Luth-AR Size: One Size Fabric/Material: 6005 Aluminum Color: Silver Brushed Condition: New Gun Model: M16 AR-15 Length: 4 in Features of Luth-AR AR-15/M16 Barrel Vise Jaws Will work with standard barrels as well as 1? bull barrels and 3/4? heavy barrels. Solid high strength aluminum for extreme durablility. Package Contents: Luth-AR AR-15/M16 Barrel Vise Jaws What firearm models does the manufacturer say Luth-AR AR-15/M16 Barrel Vise Jaws is compatible with? The manufacturer suggests that Luth-AR AR-15/M16 Barrel Vise Jaws is compatible with AR-15 M16Luth-AR VJ-01: Barrel Vise Jaws AR-15/M16 Silver Brushed Silver