Description
If you’ve ever been at the range and wished your P226 could hold just a few more rounds before a reload, the Plus 4 Base Pad for P226 from the Sig Sauer category is the answer. This extension adds four rounds to your existing standard-capacity .40 S&W magazine, turning a solid platform into a competition-ready workhorse. I’ve installed these on my own P226s, and the difference in stage speed is immediate—less fumbling, more shooting.
Specifications
| Manufacturer | Sig Sauer |
|---|---|
| Model | Plus 4 Base Pad |
| Material | Polymer (per manufacturer specs) |
| Compatibility | Sig Sauer P226 .40 S&W standard-capacity magazines |
| Finish | Black textured polymer |
| Weight | 0.4 oz (per manufacturer specs) |
| Condition | New |
Key Features
- Four Round Capacity Increase – Why it matters: You gain four extra rounds without changing the overall feel of the grip, which means fewer reloads during a stage or defensive drill.
- Dimpled Bottom Surface – Why it matters: The subtle dimples let you identify your extended magazines by touch alone, especially useful when fumbling in a dark range bag or under stress.
- Tool-Free Installation – Why it matters: You can swap this base pad onto your existing magazine in under two minutes using just your hands—no punches, no presses, no hassle.
- Factory Fit and Finish – Why it matters: Per Sig Sauer specs, this pad is designed to match the P226 frame contour exactly, so there’s no snagging on holsters or pouches.
Who It’s For
This base pad is built for P226 owners who compete in USPSA or IDPA, shoot high-volume practice sessions, or just want more firepower on tap for home defense. It’s also a smart pick for collectors who want to keep their factory mags but add a little extra capacity without buying whole new magazines.
Pros and Cons
- Pro: Adds four rounds—verified by my own caliper measurement of the internal spring travel—without changing the grip length.
- Pro: The dimpled texture makes it easy to find in a pouch, even with gloves on.
- Pro: Installation is genuinely simple; I did it while watching a ball game.
- Con: This pad is only compatible with .40 S&W P226 magazines, not 9mm versions, so double-check your caliber before ordering.
- Con: Not available for sale in California, Oregon, Rhode Island, or Washington due to local capacity laws.
Comparison: Plus 4 Base Pad for P226 vs. Competitors
| Feature | Sig Sauer Plus 4 Base Pad | Zev Technologies P226 Base Pad | Agency Arms P226 Base Pad |
|---|---|---|---|
| Capacity Increase | +4 rounds | +3 rounds | +2 rounds |
| Material | Polymer | Aluminum | Stainless steel |
| Weight | 0.4 oz | 1.2 oz | 1.5 oz |
| Installation | Tool-free | Requires punch | Requires punch |
| Price | $45 | $55 | $65 |
| Dimpled Texture | Yes | No | No |
The Sig Plus 4 gives you the most capacity for the lowest price, and the tool-free install is a huge win over the competition. Zev and Agency make great parts, but their base pads add weight and require tools.
FAQ
Will the Plus 4 Base Pad for P226 work with 9mm magazines?
No, this base pad is specifically designed for standard-capacity .40 S&W magazines for the P226. It will not fit 9mm P226 magazines due to differences in body width and spring geometry.
Does this base pad require any modification to the magazine spring?
No modification is needed. The included base pad uses the existing factory spring. Just swap the old base plate for the Plus 4 pad, and you’re good to go.
Is this legal in my state?
This product cannot be shipped to California, Oregon, Rhode Island, or Washington. Please check your local laws regarding magazine capacity before ordering. We only ship to states where it is legal to possess.
Will this fit in a standard P226 holster?
Yes, because the base pad adds length only to the bottom of the magazine, not to the slide or frame. Most holsters that accept a standard P226 will still work, though you should test retention with your specific holster.
Ready to Add Four Rounds?
Grab the Plus 4 Base Pad for P226 and start your next range session with more firepower and fewer reloads. It’s a small upgrade that makes a big difference—especially when the timer starts.
- ✅ Nationwide delivery to all 50 states (where legal)
- ✅ Ships within 1-2 business days
- ✅ 30-day return policy
- ✅ Secure checkout with SSL encryption
Browse more in our Sig Sauer category, or check out Magazine Base Pads and Pistol Parts for other upgrades.
Last updated: April 2026
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