Upgrade your AK platform with the Arsenal Inc. Pivot Pin for Hammer, Trigger, and Auto Sear (AK-051US). This precision-engineered component ensures reliable operation of your firearm’s fire control group, delivering consistent performance in demanding tactical environments.
Key Features
- Durable Steel Construction – Manufactured from high-quality steel with a protective phosphate finish for corrosion resistance and extended service life.
- Precise Fit for AK Fire Control – Designed specifically to secure the hammer, trigger, and auto sear in stamped or milled receivers.
- US-Made Quality – Produced by Arsenal Inc. to meet strict manufacturing standards for dependable function.
- Compact and Lightweight – Minimal profile with a weight of just 0.16 oz, adding negligible mass while maintaining structural integrity.
Benefits for Shooters
A properly functioning pivot pin prevents binding or misalignment in the fire control group, reducing the risk of malfunctions during critical use. This OEM-style replacement restores factory-level reliability to worn or damaged assemblies, supporting smooth trigger pull and safe operation.
Specifications
- Manufacturer: Arsenal Inc.
- Part Number: AK-051US
- Material: Steel with Phosphate Finish
- Weight: 0.16 oz
- Dimensions: Approximately 0.8″ x 0.2″ x 0.2″
- Compatibility: AK-pattern firearms requiring hammer/trigger/auto sear pivot pin
Why Choose Arsenal Inc. Pivot Pins
Arsenal Inc. components are trusted by professionals and enthusiasts for their exacting tolerances and battlefield-proven durability. This pivot pin integrates seamlessly into full-auto or semi-auto configurations, providing the secure retention needed for consistent hammer and trigger function without unnecessary play or wear.
Whether restoring a vintage AK or maintaining a modern tactical build, this essential part ensures your fire control group operates as intended.

