The Tiger Rock Inc. UP 223/5.56 Rifle Upper Receiver Vise Block is an essential tool for rifle enthusiasts engaged in assembly and repair. Built to accommodate carry handles and flattop receivers, this vise block secures your rifle during maintenance, ensuring a flawless finish. Crafted from lightweight, glass-filled polymer, this block combines strength with user-friendly design. Its compact dimensions and sleek matte black finish make it ideal for any workspace, while minimizing the risk of damage during use. Glass-filled polymer construction Matte black finish Fits both carry handle and flattop receivers Measures 4.625" in length Measures 3.25" in width Weight: 12.5 oz Compatible with AR-15 This vise block is the perfect companion for efficient rifle care and maintenance.