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Patriot Ordnance Factory built the 00328 bolt assembly to solve a simple problem: give AR builders and repair jobs a quality bolt that fits standard carriers and holds up to real use. It's machined from steel, heat treated to MIL-SPEC, and wears a nickel plating that cuts friction and fights rust. That plating does more than look sharp too. Carbon that would normally cake onto a bare bolt tends to wipe off with a rag instead of a scraper, which is a nice perk when you're cleaning after a long range day.
This bolt drops into any AR-15 or M16 bolt carrier, so it works as a straight replacement for a worn or broken bolt or as an upgrade over a rougher factory piece. One of the smarter details here is dual compatibility: it runs in both direct impingement and piston-driven setups. Piston guns put a slightly different load on the bolt because gas hits the carrier off its centerline, and POF designs these to handle that, which is why you'll see the same brand behind well-regarded piston uppers.
The 00328 arrives with the extractor and ejector already installed, springs and all, so there's no chasing down small parts or fighting a stubborn ejector roll pin at the bench. Slide it into your carrier, reinstall your cam pin and firing pin, and you're back in business. That makes it a solid choice for anyone keeping spare parts on hand, since a fresh bolt is one of the more common things to go on a high-round AR.
The nickel finish is the standout feature. Beyond the easier cleanup, it adds corrosion resistance for guns that live in humid climates, spend time in the truck, or get run hard and put away wet. For a component that takes the brunt of the firing cycle, a little extra durability goes a long way toward keeping your rifle cycling smooth for the long haul.
Yes. This bolt is built to MIL-SPEC dimensions and drops into any standard AR-15 or M16 bolt carrier. You'll reuse your existing cam pin, firing pin, and firing pin retaining pin to complete the assembly.
It does. POF designed the 00328 to run in both piston-driven and direct impingement systems, which sets it apart from a lot of bolts on the market. That makes it a flexible option whether you're running a classic DI build or a piston upper.
No, both come already installed with their springs in place, so the bolt is ready to slide into your carrier out of the package. That saves you the hassle of dealing with the ejector roll pin, which is one of the trickier small parts to work with at the bench.
The nickel plating reduces friction for smoother cycling and adds corrosion resistance for guns that see humidity or rough conditions. It also makes cleanup easier, since carbon fouling tends to wipe off rather than needing to be scraped away.
| UPC | 847313003287 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 00328 |
| Model | |
| Product Type | Bolt Action |
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