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Questions & Answers
Will this make a 15 rd mag fit a full sized grip?

No it will not have the clearance to be used in a full size or Carry frame.

by Johnkevin223, Verified Owner, February 11, 2025
Will this work with the 40 S&W magazines? Manufacturer Answer

This is only compatible with the 9mm models.

by Strike Industries, Manufacturer, March 5, 2025
Customer Reviews
Helpful Positive Review Interesting design optional pocket clip. by jt.lowercase, Verified Owner, April 18, 2024
I couldn't seem to get 5 in more than one of the mags but this may take some break in to function fully so 4/5 review.
1/1 found this helpful
Most Recent Reviews Nicely Made by James Botschon, Verified Owner, September 24, 2025
I've always been impressed with Strike Industries products. They're usually very well made, reliable, and have that wow factor. The other thing I really liked about this mag extension is it's very easy to install compared to other extensions I've use...
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Most Recent Reviews No Strike Out hwre by Rick, Verified Owner, August 24, 2025
I had bought similar plus 5 aluminum base pads from another brand and they were a strike out in my opinion. The SI +5 aluminum base pads lock up perfect, have two set screws, longer springs, and look fantastic. No Strike Outs with Strike Industries p...
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Most Recent Reviews mag extension by billyblue, Verified Owner, June 15, 2025
I bought two. One spring was supper easy to attach. The other was super stiff and was a lot harder to put in the magazine.
Most Recent Reviews Great quality feel by Drew, January 21, 2025
Great product works very well with magpul magazines
Most Recent Reviews Easy install and looks great, but… by Paul B., Verified Owner, September 30, 2024
Pros: very easy install; looks great; and compatible with Sig magwell on my Legion. Cons: can only fit +3 in a 17 rd mag using OEM springs. I’d still recommend, all things considered.
Read All 11 Reviews
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Product Info for Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate

The Strike Industries Aluminum Extended Magazine Plate for SIG SAUER P320 (9mm) is masterfully crafted to seamlessly fit 21, 17, and 15-round SIG SAUER P320 magazines. Offering an additional plus 5 rounds for 9mm, it's machined from sturdy 6061-T6 aluminum to ensure a durable construction that can handle the rigors of consistent use.image

You'll find it simple and intuitive to install, thanks to its adaptable secure design fitment. At 1.97oz, the Strike P320 EMP boasts a slim, low drag, no snag design that not only enhances its aesthetics but also optimizes its performance. Its dimensions also comply with USPSA rules making it an excellent choice for competitive shooting.

Plus, you can express your style with the available anodized SI BLACKLINE or FDELINE colors. Elevate your shooting experience with this reliable and well-engineered Strike Industries Aluminum Extended Magazine Plate for SIG SAUER P320 (9mm).

WARNING: California`s Proposition 65

Specifications for Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate:

Manufacturer: Strike Industries
Magazine Capacity: 5 Round
Caliber: 9mm Luger
Gun Make: SIG Sauer
Gun Model: SIG Sauer P320

Features of Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate

  • Fits 21, 17 and 15 round SIG SAUER P320 magazines
  • Machined from 6061T6 aluminum
  • Plus 5 round capacity for 9mm
  • Simple intuitive installation process
  • Adaptable secure design fitment
  • Slimmest profile on the market (low drag / no snag design)
  • Fits USPSA Carry Optics/Limited/Open Divisions
  • Available in anodized SI BLACKLINE or FDELINE colors

Package Contents:

  • Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate
  • x1 Aluminum Extended Magazine Plate for SIG SAUER P320 (9mm)
  • x1 Extended length spring for 21round magazine body
  • x2 Set screw (M4x3mm)
  • x1 Hex tool 2mm
  • x1 Warning card

Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate Orderable Models

List of Orderable Models

Strike Industries Extended Magazine Plate, SIG Sauer P320, 9mm, 5-Round, Black, One Size, SI-EMP-AL-P320-BK , MPN: SI-EMP-AL-P320-BK , UPC: 793811766578 , Code: 3Q-PME-SISSP1-SI-EMP-AL-P320-BK-5RD
Strike Industries Extended Magazine Plate, SIG Sauer P320, 9mm, 5-Round, FDE, One Size, SI-EMP-AL-P320-FDE , MPN: SI-EMP-AL-P320-FDE , UPC: 793811766585 , Code: 3Q-PME-SISSP1-SI-EMP-AL-P320-FDE-5RD

Proposition 65 Warning for California Consumers

For more information go to www.p65warnings.ca.gov

Notification

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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