The Birchwood Casey 1.20 inches Lower Receiver Vise Block in Gray is an essential tool for firearm enthusiasts, providing a secure and stable platform for maintenance and assembly tasks on lower receivers, ensuring precision and ease of use. Mounts onto the upper receiver of standard AR15 or similar rifles Securely attaches to any vise, providing convenient access for cleaning and assembly Precision-engineered CNC construction for accurate fitment The design of the soft jaw prevents any damage to the receiver Features snap pits that ensure a secure connection to the receiver Enables the user to install and securely torque the barrel to the receiver