POF 00328 AR15 Bolt Assembly 5.56 NATO Nickel Plated Steel

The Patriot Ordnance Factory 00328 Bolt Assembly delivers enhanced durability and corrosion resistance for AR15 and M16 platforms chambered in 5.56x45mm NATO. This nickel-plated steel construction provides superior surface hardness compared to standard phosphate finishes. The enhanced coating reduces friction and extends component life under high-volume firing conditions.

What Makes This Different

The nickel plating process creates a harder, more corrosion-resistant surface than traditional bolt carriers. This finish maintains dimensional stability across temperature extremes and resists fouling buildup that can cause cycling issues. The steel construction offers greater durability than aluminum alternatives while maintaining proper headspace specifications. POF manufactures this assembly to mil-spec dimensions with tighter tolerances than many aftermarket options.

Key Features

• Nickel-plated steel construction for enhanced corrosion resistance
• Compatible with all mil-spec AR15 and M16 upper receivers
• Chambered specifically for 5.56x45mm NATO and .223 Remington
• Meets or exceeds military specifications for headspace and timing
• Reduced friction coating improves cycling reliability
• Standard 8620 steel construction with proper heat treatment
• Drop-in replacement for factory bolt assemblies

This bolt assembly maintains consistent extraction and ejection patterns across various ammunition weights and manufacturers. The nickel finish resists carbon buildup, reducing cleaning time between range sessions or duty cycles. Competition shooters benefit from the consistent lockup and timing, while tactical users appreciate the enhanced reliability in adverse conditions. The coating withstands exposure to cleaning solvents and environmental moisture without degradation.

Technical Specs

• Caliber: 5.56x45mm NATO/.223 Remington
• Material: 8620 steel with nickel plating
• Compatibility: AR15/M16 mil-spec upper receivers
• Finish: Electroless nickel plating
• Headspace: SAAMI specification
• Country of Origin: United States
• Manufacturer: Patriot Ordnance Factory

This bolt assembly represents a direct upgrade path for builders seeking enhanced reliability without modifying other components. The mil-spec dimensions ensure compatibility with existing bolt carrier groups and upper receivers. POF's manufacturing standards deliver the consistency required for both precision shooting and high-volume applications.