The KNS Precision Bolt Catch Retaining Pin (brand part number KNSBOLTCATCHRETAININGPIN) is a black-nitride-finished steel replacement pin for the AR-15/M16 bolt catch assembly, a small but important part that keeps the bolt catch pivoting correctly instead of walking out under recoil. KNS includes three C-clips along with the single retaining pin, giving you enough hardware for the install with spares left over. At roughly 0.01 pounds, it’s about as small a part as an AR build has, but a worn or missing bolt catch pin can cause real reliability problems, so having a fresh one on hand matters.

Key Specifications

• Functions as a bolt catch retaining pin.
• Compatible with the AR-15/M16 platform.
• Finished in black nitride.
• Constructed from steel.
• Includes three C-clips.
• Includes one retaining pin.
• Weighs approximately 0.01 pounds.

Frequently Asked Questions

What does this pin do? It retains the bolt catch assembly on an AR-15/M16 lower.

Does it come with extra hardware? Yes, three C-clips are included along with the pin.

Buy the KNS Precision Bolt Catch Retaining Pin

Keep a small but critical bolt catch part on hand before it fails mid-build. Order this bolt catch retaining pin from KNS Precision through our AR bolt catch parts lineup, and our Lubbock, Texas team will get it shipped straight to your door.