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Lewis Machine & Tool
Overview
The LMT Takedown Pin / Pivot Pin Detent is a steel component designed to secure the pivot pin in your AR-15 lower receiver, ensuring a stable connection between the upper and lower assemblies. This detent is critical for maintaining the integrity of your firearm's operation, as it prevents the pivot pin from dislodging during use. This part is commonly found in standard AR-15 builds, where reliable functionality is essential.
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Builders have been adding the LMT Takedown Pin / Pivot Pin Detent to their builds on GunPartPicker since March 2026. All time, it ranks #76 of the 142 takedown pins builders have added.
Updated · from real builds on GunPartPicker
We ranked every takedown pin by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Takedown Pin Guide →The part most often added in each category by the builds that include this one

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