Obsidian Arms Pivot Pin Detent Tool AR-15
Tame the most frustrating part of your build—without launching detents across the room.
The Obsidian Arms Pivot Pin Detent Tool takes the frustration out of one of the trickiest AR-15 assembly steps. Installing the pivot pin detent and spring can be a headache—even for experienced builders. This specialized tool simplifies the job by allowing for safe, controlled installation, preventing detents from launching across your workbench or disappearing into the void.
Made from heat-treated 4140 alloy steel and finished in a corrosion-resistant QPQ coating, this tool is built to last a lifetime—literally. It’s a go-to solution whether you’re a first-time builder or a seasoned gunsmith looking to speed up your lower receiver assembly process.
Features
- Simplifies pivot pin detent installation—perfect for beginners and pros alike
- Made from 4140 alloy steel, heat-treated for strength
- Durable QPQ finish resists corrosion and wear
- Prevents lost detents and damaged springs
- Made in the USA and backed by a Lifetime Warranty
Specifications
- Material: 4140 Alloy Steel
- Finish: QPQ (Quench Polish Quench)
- Compatibility: AR-15 lower receivers
- Tool Type: Pivot Pin Detent Installer




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