The Hornady Lock-N-Load AP Breakaway Primer Feeder Cam Wire Assembly (MPN: 392227) is a direct OEM mechanical replacement part engineered specifically for the Hornady Lock-N-Load Auto-Progressive (AP) reloading press. It functions as the dedicated guide track for the primer shuttle mechanism. On the press ram's downstroke, the cam wire retracts the primer slide beneath the primer tube to retrieve a fresh primer, then advances it over the sub-plate for positive seating on the upstroke. Built with an integrated safety breakaway design, the assembly automatically disengages from its upper mounting bracket if a jam or misalignment occurs, preventing bent guide wires, stripped linkages, or damage to the main primer housing.

Key Features

• Breakaway Safety Mechanism: Features an upper molded polymer pivot bracket designed to pop free under obstruction, protecting the priming housing and progressive linkages from mechanical binding.
• Factory OEM Fit: Provides drop-in compatibility as an authentic factory replacement for worn, bent, or fatigued primer cam wires on Lock-N-Load AP setups.
• Mechanical Operation: Fully manual, non-powered design that integrates directly into the standard stroke cycle without requiring external power or electrical connections.
• Comprehensive Primer Compatibility: Operates across both small and large primer slide shuttles for standard rifle and pistol handloading applications.

Product Specifications

• Brand: Hornady
• Manufacturer Part Number (MPN): 392227
• Component Type: Progressive reloading press replacement cam wire assembly
• Construction: Formed steel cam wire with molded polymer pivot/breakaway retention bracket
• Press Compatibility: Hornady Lock-N-Load AP and Lock-N-Load AP with EZ-Ject systems
• Service Life Threshold: Community benchmarks indicate an operating lifespan of approximately 10,000 rounds before bracket fatigue or realignment is required
• Power Requirements: Non-powered / purely mechanical

Who is the Hornady Breakaway Primer Feeder Cam Wire Assembly for?

• Progressive Press Reloaders — operating a Hornady Lock-N-Load AP press who require a direct-fit progressive reloading press replacement part to maintain primer slide feeding across standard loading cycles up to an estimated service life of 10,000 rounds.
• High-Volume Handloaders — maintaining backup bench spares to replace worn or fatigued cam wire polymer brackets before reaching the 10,000 rounds service life threshold, preventing downtime from primer feed stoppages.

Less suitable for: Single-stage reloading setups or non-Hornady progressive presses; handloaders operating single-stage bench presses or competing progressive press platforms require press-specific primer arms or dedicated manufacturer-specific priming feeder conversions instead.