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The factory polymer guide rod in the Sig P320 gets the job done, but plenty of folks who run their pistol hard eventually want something tougher underneath the recoil spring. That's exactly where the Rival Arms Guide Rod Assembly comes in. It's a stainless steel replacement for the P320 Full Size, machined from solid billet with tight tolerances and a smooth surface finish that cuts down on friction as the spring travels. Polymer rods can flex, chip, or crack over time, and this piece is built to shrug off all of that.
Stainless steel simply holds up better than plastic. It resists the wear, deformation, and corrosion that eventually catch up to factory components, especially if your pistol lives in a humid range bag or sees heavy round counts. The assembly ships with an ISMI spring rated at 17 lbs, a well-regarded spring that helps keep feeding and ejection consistent shot after shot. Rival Arms builds these in the USA, and it fits P320 Full Size pistols across the common chamberings including 9mm, .357 SIG, .40 S&W, and .45 ACP.
This one is about as easy as upgrades get. It comes fully assembled with the spring already seated, so there's no fussing over orientation or hunting for small parts. If you can field strip your P320 and swap a recoil spring, you can install this in a couple of minutes with no fitting or gunsmith required. Just lock the slide off, drop it in place of the factory rod, and reassemble.
Whether you carry, compete, or just want your range gun to run the same way every time, this is a straightforward piece of insurance for one of the harder-working parts inside your slide. It's a small change that pays off in long-term durability and peace of mind.
Yes, it's designed specifically for the P320 Full Size platform. It works across the common chamberings for that frame, including 9mm, .357 SIG, .40 S&W, and .45 ACP. Just make sure your pistol is the Full Size and not the Carry or Compact, since those use different length assemblies.
No gunsmith needed. It ships fully assembled and drops right in where your factory guide rod sits. If you're comfortable field stripping your P320 and swapping a recoil spring, you can handle this yourself in a few minutes.
It comes with a premium ISMI spring rated at 17 lbs, which is a stock-weight spring meant to keep feeding and ejection consistent with typical loads. Because it's matched to the stainless rod, you get a balanced, repeatable recoil impulse without needing to source your own spring.
Polymer guide rods can flex, chip, or crack over time, and that wear can eventually show up as feeding or ejection hiccups. The stainless steel construction here resists all of that and holds its tolerances shot after shot. It's a low-cost, high-durability upgrade for one of the busiest parts in your slide.
| UPC | 788130031735 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RARA50S201S |
| Model |
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