Patriot Ordnance Factory (POF) Bolt Assembly — 5.56×45mm NATO — Nickel-Plated Steel — For AR-15 / M16 — Model 00328 (UPC: 847313003287)
Upgrade your AR-15 or M16 with the precision-built Patriot Ordnance Factory (POF) Bolt Assembly (Model 00328) — a drop-in, high-performance bolt manufactured from nickel-plated steel for superior wear resistance, smooth cycling, and corrosion protection. Designed to exacting tolerances for 5.56×45mm NATO platforms, this bolt assembly delivers reliable ignition, consistent lockup, and long life — whether you run your rifle hard at the range, on duty, or in competition.
High-Quality Materials & Finish
POF uses premium, heat-treated steel and a durable nickel plating to produce a bolt that resists galling, pitting, and corrosion. The nickel finish lowers friction between contact surfaces, improving extractor function and ejection consistency while making cleaning easier and extending service intervals.
Precision Manufacturing for Reliable Lockup
Each bolt assembly is machined to tight tolerances and inspected to ensure proper headspace and consistent engagement with the barrel extension. The result: repeatable, solid lockup shot after shot, which aids accuracy and reduces wear on the bolt and barrel extension.
Optimized for 5.56×45mm NATO
Specifically tailored for 5.56 NATO pressures and dimensions, this POF bolt assembly works flawlessly in AR-15 and M16 lower receiver variants. It supports a wide range of magazines and ammunition types, from high-velocity 55gr FMJ to heavier duty 77gr match loads, offering dependable performance across duty, defense, and precision applications.
Key Features & Benefits
Model: Patriot Ordnance Factory Bolt Assembly — 00328.
UPC: 847313003287.
Caliber: 5.56×45mm NATO (optimized).
Material: Heat-treated steel with nickel plating for corrosion resistance and reduced friction.
Compatibility: AR-15 / M16 lower receiver variants; designed for standard AR platform bolt carrier groups (verify fit with your BCG spec).
Finish: Smooth, durable nickel finish that eases cleaning and reduces wear.
Reliability: Engineered for consistent ignition, extraction, and ejection under high round counts.
Durability: Hardened components withstand the stresses of modern ammunition and rapid cycling.
Maintenance: Nickel plating resists rust and helps shed fouling — clean with standard firearm solvents and lubricants.
Why Choose a POF Bolt Assembly?
Patriot Ordnance Factory is known for innovative small-arms engineering and high-quality components. Choosing a POF bolt assembly gives you:
Industry-grade reliability trusted by serious shooters and armorers.
Reduced downtime thanks to corrosion-resistant plating and rugged construction.
Consistent performance that helps maintain tight groups and dependable function in adverse conditions.
Installation & Fitment Notes
This bolt assembly is intended as a direct replacement for standard AR-15 / M16 bolts when used with a compatible bolt carrier group (BCG).
Always verify dimensional compatibility with your existing BCG and barrel extension before installation.
Headspace and proper assembly should be confirmed by a qualified armorer or gunsmith if you are unsure — improper installation can affect safety and accuracy.
Recommended maintenance: inspect lugs and gas rings periodically, clean fouling from bolt face and extractor recess, and apply a quality lubricant to gas rings and cam surfaces.
Applications
Tactical and duty rifles for law enforcement and security professionals.
Competition and high-volume training where reliability and fast cycling matter.
Armorer upgrades and rifle rebuilds for improved longevity and performance.
Enthusiasts seeking a corrosion-resistant bolt for outdoor and maritime environments.
Technical Snapshot
Model: POF Bolt Assembly — 00328
UPC: 847313003287
Caliber: 5.56×45mm NATO
Material: Nickel-plated, heat-treated steel
Platform: AR-15 / M16 compatible (standard BCG form factor)
Final Thought
If you want a bolt assembly that combines rugged durability, low friction operation, and corrosion resistance—backed by POF engineering—the Patriot Ordnance Factory 00328 Nickel-Plated Bolt Assembly is an outstanding upgrade for any 5.56×45mm AR-15 or M16 build. It’s built to run hard, last long, and perform consistently when it matters most.
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