Patriot Ordnance Factory 00328 Bolt Assembly5.56x45mm NATO Nickel Plated Steel For AR15/M16

The Patriot Ordnance Factory 00328 AR15/M16 5.56x45mm NATO nickel plated steel bolt assembly is a direct replacement component for your AR platform rifle. Whether you're running a duty gun, a precision build, or a workhorse hunting platform, a quality bolt is one of those parts where durability and reliability matter—and POF has been building tough, combat-proven AR components for serious shooters for years. This nickel plated steel bolt is engineered to handle the demands of 5.56 NATO and .223 Remington ammunition.

Nickel plating offers real advantages on the firing line and in the field. The coating reduces friction and wear, helps shed fouling and carbon buildup more easily during cleaning, and provides a corrosion-resistant finish that stands up to weather and moisture better than bare steel. For shooters who run suppressed guns, shoot in humid or coastal environments, or simply want a bolt that stays cleaner longer between cleanings, this finish pays dividends.

POF bolts are manufactured to tight tolerances and thoroughly tested, so you can trust this assembly in your rifle without hesitation. Drop it into your existing carrier group—or pair it with a POF carrier if you're doing a full upgrade—and get back to shooting. Straightforward, reliable, built right.

Key Features

• Nickel plated steel finish for corrosion resistance and easier cleaning
• Designed for 5.56x45mm NATO and compatible .223 Remington ammunition
• Direct fit for AR15 and M16 platform rifles
• Precision manufactured to POF quality standards
• Reduces friction and fouling buildup compared to bare steel

Frequently Asked Questions

Will this bolt work in my AR15 or M16?

Yes. This POF bolt assembly is a direct fit for both AR15 and M16 platform rifles chambered in 5.56x45mm NATO.

What ammunition does this bolt support?

The 00328 assembly is designed for 5.56x45mm NATO. It is also compatible with .223 Remington ammunition.

What's included?

This is a bolt assembly—the complete bolt component ready to install into your carrier group.

Why choose a nickel plated bolt over bare steel?

Nickel plating reduces friction, makes the bolt easier to clean and maintain, resists corrosion and rust, and performs well in wet or harsh environments. It's a practical upgrade if you shoot suppressed, run in humid climates, or want a lower-maintenance bolt.