Upgrade your AR-15 maintenance routine with the Obsidian Arms Upper Receiver Vise Block, the essential tool for secure and damage-free gunsmithing. Designed for precision and reliability, this vise block ensures your upper receiver stays firmly in place during barrel installations, optic mounting, and other critical tasks, protecting your investment from vise-induced scratches or dents. Key Features Made in USA with high-quality craftsmanship for lasting durability. High-Density Polyethylene (HDPE) Construction: Machined from tough, impact-resistant HDPE to grip your upper receiver without crushing, marking, or scratching the finish. Universal Fit: Compatible with all standard mil-spec AR-15 upper receivers, including flat-top and carry-handle styles. Integrated Locking Pins: Includes pins for a rock-solid hold, allowing you to apply maximum torque confidently. Lightweight Design: Weighing just 16 ounces, it's easy to handle yet provides exceptional stability in your bench vise. Specifications Material: High-Density Polyethylene (HDPE) Compatibility: Standard AR-15 Upper Receivers Includes: Vise Block and Locking Pins Weight: 16 oz SKU: 31000 Why Choose the Obsidian Arms Upper Receiver Vise Block? When working on your AR-15, the last thing you want is a slip or damage from an inadequate vise setup. This vise block solves common pain points like receiver misalignment and finish marred by metal jaws, offering a non-marring, precise hold that distributes pressure evenly. Gunsmiths and DIY builders alike praise its simplicity-simply slide your upper onto the block, insert the pins, and clamp into your vise for hassle-free assembly. Whether you're swapping barrels or installing free-float handguards, it provides the stability needed for professional results at home, saving you time and preventing costly repairs. Don't compromise on safety or precision during your next AR-15 project. Add the Obsidian Arms Upper Receiver Vise Block to your toolkit today and experience the difference in secure, scratch-free maintenance. Frequently Asked Questions Does this vise block fit all AR-15 upper receivers? Yes, it is designed to fit all standard mil-spec AR-15 upper receivers, ensuring broad compatibility for most builds. What material is the Obsidian Arms vise block made from? It is precision-machined from high-density polyethylene (HDPE), which offers excellent impact resistance and prevents damage to your receiver's finish. Is it suitable for high-torque applications like barrel installation? Absolutely. The locking pins and durable HDPE construction provide a secure hold, allowing you to apply significant torque without slipping or deforming the block.