The Master Bench Block – AR15 is a Master Grade® build tool that holds five different gun parts in eight orientations, allowing for easy removal or installation of 13 distinct pins and gas rings. The bench block is designed with embedded magnets to securely capture any pin you punch out, eliminating the risk of losing small components during assembly or disassembly. The Master Bench Block – AR15 features clear, engraved labels indicating where each component fits and what size punch is needed to knock out specific pins – an invaluable feature for complex assemblies. Additionally, it includes storage spaces specifically designed for common size pins and a no-slip coating that ensures a firm grip on your workspace. This innovative product makes your project less of a chore and more of an engaging activity.