Anyone who builds AR-15s understands that there are certain elements in a lower-receiver build that are made much easier through the use of specialized tools. Obsidian Arms offers the definitive, must-have punch kit for AR building with this Armorer's Specialty 4-Piece Tool Set. Included in this Armorer's Specialty Tool Set are a 3/32 flat-sided punch that aids in the installation of the bolt-catch pin, a Delrin punch for starting hammer and trigger pins, a drift pin for positioning the trigger and hammer, and a pivot-pin detent tool. All of the punches included in this tool set are made from 4140 alloy steel and have been heat-treated and QPQ-finished for enhanced durability. The tools are covered by Obsidian Arms' lifetime warranty, so if you ever break any of their tools, the company will replace the tool at no charge.

• QPQ finish
• Limited Lifetime Manufacturer Warranty
• Made in the USA