Luth-AR Takedown Pin Detent with Spring (10-Pack) – AR-15

The Luth-AR Takedown Pin Detent with Spring is a replacement component for AR-15 rifles and pistols. This small but critical part keeps the rear takedown pin properly seated and under tension, preventing the upper and lower receivers from separating unintentionally during use. These detents are commonly lost during builds, repairs, or maintenance—this 10-pack ensures you have spares on hand for multiple projects or future needs.

Each detent is machined to mil-spec dimensions and includes a matching spring. Installation requires disassembly of the lower receiver and careful alignment of the detent and spring into the rear takedown pin hole. A roll pin punch or specialized tool is recommended to avoid launching the detent during installation. Keep extras in your parts kit—these are easy to lose and impossible to function without.

• Part Type: Takedown Pin Detent and Spring Set
• Compatible Firearms: AR-15 rifles and pistols
• Material: Steel detent, steel spring
• Finish: Standard
• Installation: Drop-in (requires lower receiver disassembly and careful handling)
• Includes: 10 detents, 10 springs