P320 +5 Competition Base Pads (Brass)

(2 customer reviews)


Our Plus 5 P320 Brass Base Pads are perfect for competitors looking to add weight to their pistols. Compared to our 6061 Aluminum pads with anodized coating, the Brass Base Pads are significantly heavier, about triple the weight.

The price listed is for one base pad.

Also available in hard-duty 6061 Aluminum. Read the Fit Guide below.

Save $4 each when you buy three or more base pads! The discount is shown in the cart before checkout.

Add Laser Marking

Custom laser marking is available for your base pads. First, add your base pads to your cart, then click here to customize your laser marking!

State and regional magazine capacity restrictions apply. Therefore, we cannot ship this item to California, Connecticut, Hawaii, Maryland, Massachusetts, New Jersey, New York, Rhode Island, Vermont, Washington, Washington, D.C. and Cook County in Illinois.

In stock

SKU: BPD-SIG-32X-COMP-5-BRASS Category: Tag:


For USPSA Limited and Carry Optics, ensure you weigh your setup to ensure you are under the maximum weight limit. 

These base pads work with 15, 17 and 21-round P320 9mm magazines. Use your stock magazine springs for the 15 and 21-round magazines, but use the included Wolff Spring for the 17-round magazines. View the Fit Guide below for details on .40 and .357 SIG capacity.

Although these base pads are a bit “softer” and will show scratches and dents with use, we expect the same extra-long service life as our aluminum base pads.

Designed for hard-duty and competitor use. Our custom Grayguns SIG Sauer P320 9mm Plus 5 Solid Brass magazine base is specifically designed for the competitor looking for more weight.

Each pad features a 3-by-5 matrix. Number your mags using a Sharpie or paint pen. Additional space is available to write your initials.

Our base pads are compatible with our P320 xSeries Laser-Sculpted Grip Module and xCompact Grip Modules.

Fit Guide

Backward compatible with P320 modules, including the standard and xSeries with or without the extended magwell installed.

These base pads will not fit P320 X-TEN magazines. We do offer base pads for the P320 X-TEN.

For those with .40 and .357 SIG magazines. these extended base pads will be plus three instead of plus five. With aftermarket followers, you may be able to get plus four.

Product Notes

  • UPSPA Length – The 17-round magazines with our +5 base pads will fit the 141.25 mm size limit for Limited and Carry Optics
  • No base plate is required, as the back plate (shown) holds the base pad in place.
  • The last round is pretty tough to load on the 17-round magazines; we suggest you use a loader. The 15 and 21-round magazines are easier to load fully.
  • We do not test the fit with third-party magwells or grip modules from other sources.

Additional information

Weight .375 lbs
Package Dimensions 10 × 6 × 2 in

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5 out of 5 stars

2 reviews

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What others are saying

  1. George Hunt

    Great product

    George Hunt (verified owner)

    I put the Plus 5 P320 Brass Base Pads on my full size P320 mags. Now they fit in my P320 X-five legion, it adds 5 rounds to the capacity, it hasn’t cracked or broken when it hits the concrete floor, and with the added weight, the empty or partially empty mags kick out quickly when changing magazines. I highly recommend this product.

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  2. dexterml

    The Best basepads ever!

    dexterml (verified owner)

    I’m just amazed by the quality of these basepads. I use them as my drop mags. They take quite a beating. I love the way they come right out of my P-320 X5 Legion! I can’t wait to use them on my P-320 Lockwood!

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Many parts sold by Grayguns - including but not limited to triggers, trigger kits, internal components and spring kits - are intended for installation by a qualified armorer or gunsmith who is familiar with the firearm.

Although kits fit with no issues in a great majority of pistols, Grayguns cannot guarantee perfect functionality in every instance.

Due to varying tolerances present in all mass-produced firearms, professional fitting by a qualified armorer who is familiar with the pistol's action may be required.

Grayguns offers installation services for all parts kits we offer. If you have any issues or questions about the installation process, STOP IMMEDIATELY and contact the Grayguns Customer Service Team.