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The little parts inside an AR bolt carrier rarely get much attention, but they take a beating cycle after cycle. This kit bundles three of the pieces JP Enterprises rethought from the ground up: the Enhanced Cam Pin, a high pressure .308 firing pin, and their cotter-style firing pin retainer pin. Every one holds the critical Mil-spec dimensions while gaining better durability, finish, and function. These are the same pins JP runs in their custom rifle and upper builds, so you're getting shop-standard hardware rather than an afterthought.
The cam pin is where a lot of large-frame bolts get into trouble. Standard cam pins tend to run undersized, and that slop stresses the cam pin hole in the bolt every time the gun cycles, which is one of the most common spots for bolt breakage. JP machines their Enhanced Cam Pin thicker to take up that play, then adds a rock-hard QPQ finish for low friction and corrosion resistance. A redesigned head makes takedown easier and softened edges cut down wear on the upper receiver.
The high pressure firing pin is made from hardened tool steel with a nitride coating that dramatically extends wear life over a factory pin. It's matched to JP's High Pressure EnhancedBolt and works with the JPEB-308HP, JPBC-EB308HP, and any rifle running that bolt. The retainer pin ditches the old split-pin headache entirely. That traditional design is notorious for falling out when you pull the carrier and needing the tips spread just to stay put. JP's cotter-style pin locks in with far better retention and holds up to repeated disassembly.
These pins are sized for JP bolt carriers but drop in as a solid replacement across large-frame carriers of the DPMS LR-308 pattern. Large-frame rifles aren't standardized the way the AR-15 is, so confirm your platform before ordering. The firing pin specifically is meant to run only with the JP High Pressure EnhancedBolt, not as a universal swap into other bolt assemblies.
You get three pieces: JP's Enhanced Cam Pin, the high pressure .308 firing pin, and a cotter-style firing pin retainer pin. Each has been redesigned to hold the critical Mil-spec dimensions while improving durability and finish. These are the same pins JP uses in their custom builds.
They're sized for JP bolt carriers but work as a replacement across large-frame carriers built on the DPMS LR-308 pattern. Keep in mind that large-frame AR rifles aren't standardized like the AR-15, so it's worth confirming your specific platform before ordering. The firing pin in particular is designed to run only with the JP High Pressure EnhancedBolt.
Standard cam pins often run undersized, which lets the bolt, carrier, and cam pin move around during cycling and stresses the cam pin hole in the bolt. That's one of the most common places for a bolt to crack. JP machines the Enhanced Cam Pin thicker to take up that slop and adds a QPQ finish that cuts friction and wear.
The old split-pin style is known for poor retention and tends to fall out when you pull the carrier group. Over time the tips get spread repeatedly and eventually break or go missing. JP's cotter-style retainer pin holds far more securely and stands up to repeated disassembly.
| UPC | 812872026350 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | JPBC-PINS-308HP |
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