The Doublestar OOPS! detent kit collects the small parts that most often go flying across the shop floor during an AR-15 build. Pivot pin detent, takedown pin detent, safety selector detent, buffer retainer, and the matching springs — every AR-15 armorer needs a spare set on hand, and this kit gives you enough to recover from more than one workbench mishap.
What's included:
Compatibility: Fits standard AR-15 mil-spec lower receivers. If you're regularly building lowers, working on other people's rifles, or teaching an AR class, keep several of these on the bench — one dropped detent under a floor mat is enough to stall a build. Standard mil-spec dimensions; verify your lower is mil-spec (not a proprietary or oversized frame) before install.
