SIG P320 Magazine Base Pads

(42 customer reviews)

$20.00

Hard-duty replacement base pads for your SIG Sauer® P320. Designed to be repeatedly dropped on concrete or asphalt hundreds of times, they are a perfect upgrade for the OEM plastic base pads.

These base pads are backward compatible with all P320 modules, including the standard and xSeries, with or without the extended magwell installed. Ensure you read the description and Fit Guide below.

Two versions available

  • Standard Version – Designed for the XSeries without the magwell. It also works with the P320 module.
  • Extended Magwell Version – Designed for the full-size magazine in an XSeries with the magwell. It also works with 21-round magazines and fits the standard P320.

Discount available when you buy three or more base pads! ($18.50 each) 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!

P320 Inner Base Plate - Square Peg

Required if you purchased our SIG Sauer® P320 upgraded base pads - in aluminum or brass - and have the old style inner base plate. The old design has a round peg.

If you have the round peg, replace with these base plates. Installation is easy, and requires no special tools.

SKU: N/A Categories: , Tag:

Description

Designed for hard-duty use, the custom Grayguns SIG Sauer P320 magazine base pads are manufactured from 6061 Aluminum and professionally finished with MIL-A-8625 Type III anodized coating. In addition, the base pads go through a glass-beading process to provide a flat-black finish.

Appropriate for competition and shooting enthusiasts looking for a quality, durable upgrade.

The base pad is the same thickness as the OEM SIG base pad. We’ve streamlined them in multiple areas. A relief cut on the sides enhances malfunction drills and allows for effective one-handed reloads using the belt or holster.

The cut mirrors the P320 OEM modules and creates a cut for the xSeries modules.

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 Laser-Sculpted Grip Modules and Laser-Sculpted P320 Tungsten-Infused Grip Module.

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

P320 Base Pad Fit Guide

With the large selection of aftermarket grip modules and magwells available for the P320, it is difficult to know if our base pads will work with modules and magwells from other manufacturers.

  • Our Extended Magwell Version does not fit the P320 grip modules from Wilson Combat.

P320 Magazine Base Pad Versions

  • Standard Version – Designed for the XSeries without the magwell. It also works with the P320 module.
  • Extended Magwell Version – Designed for the full-size magazine in an XSeries module with the magwell. It also works with 21-round magazines and fits the standard P320.

P320 Magazine Base Pad Weights

  • Standard Version – 10.1 grams
  • Extended Magwell Version – 26.9 grams

Base pads are compatible with new SIG P320 magazines with square pegs. (See product photos.) Do you have the base plates with the round peg? If yes, you’ll need to purchase a P320 Inner Base Plate – Square Peg for each of your magazines.

Additional information

Weight N/A
Dimensions N/A
Options

Single Base Pad, Single Base Pad (Ext. Magwell)

Brand

Grayguns

Manufacturer

Grayguns

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4.95 out of 5 stars

42 reviews

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What others are saying

  1. weitzer.firearms

    weitzer.firearms (verified owner)

    Fit and finish are spot on – needed these floor plates to convert standard Sig P320 mags to work in an AXG model with extended mag-well. Superior design and thought process went into these floor plates – the converted mags also fit into other P320 variants

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  2. lcgassman

    lcgassman (verified owner)

    Needed to change base plates after a building Sig P320 X5 conversion kit. Customer service knew exactly what I needed over the phone and had it shipped ASAP. Couldn’t be happier with results.

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  3. tscardaville

    tscardaville (verified owner)

    Great base pad, at a good price! Much better than my legion pads, which always seem to come loose dropping on concrete. Have since converted them to these pads

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  4. raynari

    raynari (verified owner)

    These worked perfect for my P320 mags and fit great in P320. I will have to get a few more for rest of my mags. Great vendor and quick to ship.

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  5. Orin Dutton

    Fits the P320 AXG Magwell

    Orin Dutton (verified owner)

    I’ve been looking for basepads for my P320 17rnd mags, since Sig decided to make a Magazine Funnel as they call it, that doesn’t work with the mags provided with the gun when purchased. The Extended Magwell base pads worked perfectly. They load smooth and eject the same way. They definitely work with the P320 AXG Magwell. It’s not quite a flush fit, there is just barely enough to get a hold of to pull them out. That hasn’t been an issue for me, as they fall free every time even when empty.

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  6. tarknutz

    Perfect

    tarknutz (verified owner)

    Highly recommended. Quick easy service on ordering and getting. They work perfectly for upgrading standard mag so that they will work perfectly in the x-Five grip module. Again Highly recommended!!!

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  7. Ben Arriola

    Customer Service is top notch!

    Ben Arriola (verified owner)

    I ordered the base plate. Upon receipt I observed the product to be well made. Unfortunately, I experienced some fitment issues with my magazine. Gray Guns customer service was on top of the situation and went above and beyond to get me exactly what I needed. Highly recommended. Customer for life.

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  8. srwade59-2242

    srwade59-2242 (verified owner)

    Just what I was looking for

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  9. madcat80t

    CA P320 M18 conversion to P320 XFIVE TXG

    madcat80t (verified owner)

    I used these (extended mag well base pads) for my California nudered P320 M18 mags so that the mags would fit on my P320 XFIVE TXG with beveled mag well conversion kit.
    They are a super tight fit, at first I almost thought they weren’t going to slide on. I found that putting a couple drops of quality oil in the slots where your mag slides in did help.

    These seem to be really nice upgrades and they also allow me to use my original M18 mags instead of buying all new ones, so that is a big double win.
    However, I do still have to range test these, otherwise so far so good.

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  10. chadbanogon

    Must have for enhanced magwells!

    chadbanogon (verified owner)

    I recently upgraded my P320 frame to a Brouwer Solutions M1811 grip module with extended magazine well (very nice BTW), and the standard magazine base plates were now recessed within the mag well. I purchased several of these extended base pads to remedy that problem, and upon receiving them saw that they were well constructed. Installation was simple, they function perfectly, and the magazines are now able to grabbed just in case there is a malfunction. These are a must purchase if you have an extended magazine well!

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  11. IGOR EGOROV

    Base Pad for Magwell

    IGOR EGOROV (verified owner)

    Great product. Problem solved – 17 round original mag would not fully in. Now its perfect!

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  12. George Hunt

    Great product

    George Hunt (verified owner)

    I placed the extended base pad with the inner base plate on my regular P320 mags and now they work in my P320 X-five Legion as well as in my P320. I have kicked them out of my pistols onto concrete floors many times and they hold up perfectly as they are not plastic bases. I highly recommend this product.

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  13. flassen

    Gray guns Base Pads

    flassen (verified owner)

    These base pads are exactly what I was looking for. I got both types. They fit very well and work wonderfully. These are very high quality base pads and well worth the price.
    I’m happy to have found Grayguns!

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  14. 1 out of 2 people found this helpful
    jasonberns75

    Very solid and love the numbering option

    jasonberns75 (verified owner)

    Haven’t been able to use these in the field yet, but they seem very solid. Finish is excellent. I LOVE the dimples for numbering the pads. Very clean and a medium white paint marker worked flawlessly. The one change I would make is to increase the grip undercut a bit for use with gloves. I may add some skateboard deck tape to the sides of mine.
    I’m going to be sad watching these slam into gravel on ranges, but I know they will protect the working parts of the magazines!

    UPDATE
    These magazine base pads allowed for the magazine to over-insert into my P320 Icarus grip module and BENT my FCU. I was at a two day class and suddenly my gun stopped going into battery with every shot. We eventually found the issue – bent extractor on the FCU. BEWARE and check for over-insertion before using! I’m now out hundreds of dollars on parts and a new serialized FCU. Check the attached photo and you can see the bent part.

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  15. Matt Delgado

    Perfect fitment

    Matt Delgado (verified owner)

    Quick shipping, perfect fitment with the 320 mag and Gray Guns inner base plate, and highly durable.

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  16. jeffstablet

    Ext mag well base pads work great.

    jeffstablet (verified owner)

    Got a Sig P320 Legion with the extended magwell & needed to replace my old 17 round magazine base pads. These were less expensive than all others I found, with the discount for multiple items. Well recommended & reviewed. They work great with all of my P320 grip modules, which unfortunately the Legion base pads did not.

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  17. Robert McClelland

    They do the job!

    Robert McClelland (verified owner)

    I bought these so that I could could continue to use my old 17rd magazines with the new flared magwell I installed on my p320.

    The fit and finish are great, and they work for the intended purpose. The price was reasonable, however for my (non-competition) use case, it would have been nice to see a cheaper polymer option.

    Overall, great product!

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  18. orionlimousines

    Excellent Fit and Finish

    orionlimousines (verified owner)

    Ordered the P320 Mag extensions for my standard 17 round mags. The original mags fit great in my 320, not so good in my legion… these basepads fixed that. They are +0 but that is fine as they actually fit now!!!

    The Legion is designed to work with the 20 round sig mags, but these baseplates saved me the cost of some new mags. The 17 rounders now fit my 320 and my legion!!

    Thank you.

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  19. pliskin1981

    Sig p320 Grayguns base pad

    pliskin1981 (verified owner)

    Always the best quality and fit. Wish more people knew how this company had alot to do with bringing Sig back to life in the US. Lifetime customer. Thanks guys keep up the great work.

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  20. Nick Talbert

    Nick Talbert (verified owner)

    Easy to install, performs as advertised.

    As a bonus, empty mags seem to drop free easier.

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  21. Adam Rider

    GGI Base Pads

    Adam Rider (verified owner)

    Excellent product! My stock base pads had worn and shifted around exposing the sharp edge of the magazine, these aluminum base plates are a great solution.
    Parts received were very clean and high quality.
    Fit is perfect and installation is a breeze.

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  22. Mark Nevans

    Truly premium part

    Mark Nevans (verified owner)

    I am so pleased with my Gray Guns purchase. The quality is impeccable and the fit is absolutely perfect. Highly recommended.

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  23. Akakaroach

    From round to square base pads

    Akakaroach (verified owner)

    Functional and they look absolutely amazing. Fits perfect with x series grips with installed sig magwell. Another satisfying purchase.

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  24. mbradford70

    Solution for Sig 320X MAX or Legion with Mag Well

    mbradford70 (verified owner)

    Fits great for IDPA on a 17 round mag.

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  25. Gary Boukather

    Gray Guns are my first choice

    Gary Boukather (verified owner)

    The service and product outstanding

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  26. One person found this helpful
    Brandon Sindle

    Excelent Quality and Feel

    Brandon Sindle (verified owner)

    I had gotten a Magwell for my xgrip and had to change my baseplates. So i purchased these and they feel amazing and look amazing too. Coupling these up with my xgrip and flared magwell make for very fast easy reloads.

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  27. One person found this helpful
    Eric Page

    Work Great

    Eric Page (verified owner)

    Bought these so my 17 round mags will fit with the Sig Mag well funnel. The work great and add just a little extra weight so when you hit the mag release they fall free without a worry. I no longer worry about my base plates breaking when the magazine lands on concrete or a rock.

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  28. joseph-4424

    P320 Base Pads

    joseph-4424 (verified owner)

    I have both the single base pad and the base pad for magwell. Both are great fitting, add weight and look better than the legion base pad or any other on the market. The engraving option is a great touch to personalize and mark each magazine.

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  29. outtadare

    Perfect for AXG Magwell Extension!

    outtadare (verified owner)

    I’ve been running these GG +0 extended base pads for IDPA and they work great with the AXG flared magwell extension! I ran the ones that SIG included with the gun, and while I like the aggressive texture on those, they are almost completely flush when seated which can make it difficult to seat the mag completely when pressured by time. The GG + 0’s stick out of the bottom of the flared magwell extension just enough to eliminate that for me. I most certainly reccomend them!

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  30. Andrew Richards

    Great Upgrade

    Andrew Richards (verified owner)

    Let’s face it, the stock p320 base plates stink. I switched them out with the Gray Guns square base pads to accommodate a magwell. They look great and function even better. Fantastic quality.

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  31. Bruce Baesemann

    Great Base pads

    Bruce Baesemann (verified owner)

    I have purchased 12 of these base pads for use with a Sig P320 with a magazine funnel attached. Happy to say that they fit and work great, no issues at all. Work so well had to get 6 for my neighbor.

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  32. northnewf1

    Needed

    northnewf1 (verified owner)

    Great weight, works perfectly, if your buying a normal p320 magazine, put this plate on it.

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  33. Charles Shoup

    Fantastic

    Charles Shoup (verified owner)

    Just what you need if adding a extended magwell. $55.00 for Legion mag, or $18.00 for this. Fits perfect, works perfect and looks fantastic. Thanks Grayguns for another outstanding product.

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  34. Frederick Scholl

    Extended Base Pads

    Frederick Scholl (verified owner)

    Have purchased 6 of these base pads for use with a Sig P320 with a magazine funnel attached. Happy to say that they fit and work great, no issues at all

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  35. Charles Cooper

    Awesome Base Pads

    Charles Cooper (verified owner)

    Purchased several of these base pads for my Xcarry Legion. I purchased some aftermarket P320 17 round magazines with base pads that do not fit the Xcarry frame with or without the mag well. These base pads work perfect and seem better than the original Legion mag’s base plates which are dent, scratch, and show wear immediately. Price is right also. I only purchased a few to see how they work and intend to purchase several more to round out the new purchased mags.
    Thanks.

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  36. Jesse Spackman

    Awesome

    Jesse Spackman (verified owner)

    So much better than the OEM units and now I can buy an upgraded grip module!

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  37. David Phillips

    Love the P320 Hard Duty Use base pads!

    David Phillips (verified owner)

    I just received and placed into service my P320 Hard Duty Use base pads. I ordered a dozen with the laser marking. They were produced and shipped immediately. In hand the base pads are fantastic, obviously as strong as advertised. Additionally, they have a nice little recess built in for one to tug at the mag to be sure it is seated or to rip when necessary. These base pads are a product that improves both function and appearance, and what’s not to like about that?!
    Thank you, Grayguns, for an outstanding product!

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  38. 2 out of 2 people found this helpful
    rbitting55

    Grayguns SIG P320 Hard Duty Magazine Base Plate Pads Rock!

    rbitting55 (verified owner)

    I purchased the Hard Duty Use SIG P320 Magazine Base Pads for my SIG P320 X-Series compact build. Their fit and shape are exactly what I was looking for in this grip module. The slight extended relief cut allows for a positive grab but not enough to cause excess printing for EDC. Definitely love the aesthetic appearance of the base plate for my pistol.

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  39. Chad Hargis

    Very nice!

    Chad Hargis (verified owner)

    I shoot IDPA and these base pads are the perfect addition when you run a magwell but need to still fit in the box. It’s a touch of class that you can get these custom engraved.

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  40. bcsoswat07

    W O W

    bcsoswat07 (verified owner)

    Honestly blown away when I felt the quality of these base pads!
    For some reason I expected them to be plastic for the price and forgot they were aluminum in the description… I was pleasantly surprised.
    Bought these to replace my standard Sig 17 rd mag base pads, so that I could use them with the extended mag well.

    VERY happy with purchase!

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  41. bgrv07

    Awesome pad

    bgrv07 (verified owner)

    I picked one up for my carry RXP X-Compact. It mates perfectly with the 15rd mag in the gray laser sculpted grip module. The tolerances to the mag body are outstanding. They are far superior to the shield arms +5 extension that has slight gaps around the mag body rails. Both pads function flawlessly but this pad looks like it was hand fitted, like a nice 1911. Pretty solid deal for a low price. My p320 ccw mags will all wear these moving forward. Thanks again GGI, I’ll be back.

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  42. One person found this helpful
    trp.itechxxiv

    Well made durable product well worth the price

    trp.itechxxiv (verified owner)

    I bought 10 of these for competitive shooting. They are extremely well made and very durable. I especially got them for the inlays for numbering my mags. I have nothing but great things to say. Be advised that if you have purchased Extended Magwell Version for your 21 round magazine they will not meet USPSA mag length. I shot at the USPSA 2019 Area 7 championship and found out the hard way at the crono stage. The 21 rnd mags with the GG Extended Magwell Version will not pass the 141.5 mm. I was moved to Open division from Carry Optics.

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Disclaimer

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.