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Reviews & Ratings for Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate — 11 reviews

(11 reviews)
Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate
Strike Industries SIG Sauer P320, 9mm, 5-Round Extended Magazine Plate
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Most Helpful Positive Review Interesting design optional pocket clip.
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.
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Nicely Made

by James Botschon, Verified Owner from TX, United States Written on 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 used. I will definitely be using their products for future builds!
Would recommend: Yes
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No Strike Out hwre

by Rick, Verified Owner from FL, United States Written on 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 products.
Pros:
  • Everything
Cons:
  • None
  • N
Would recommend: Yes
Was it helpful to you? Yes | No
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mag extension

by billyblue, Verified Owner from UT, United States Written on 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.
Would recommend: Yes
Was it helpful to you? Yes | No
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Great quality feel

by Drew, from CO, United States Written on January 21, 2025
Great product works very well with magpul magazines
Would recommend: Yes
Was it helpful to you? Yes | No
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Easy install and looks great, but…

by Paul B., Verified Owner from CA, United States Written on 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.
Would recommend: Yes
Was it helpful to you? Yes | No
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excellent extensions

by Rob A., Verified Owner from PA, United States Written on September 6, 2024
Light weight metal construction, easy to put together and futuristic design. Great to add some flare and extra rounds to your build
Would recommend: Yes
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Base plate

by wadoo, Verified Owner from IN, United States Written on July 29, 2024
I have P320 x-carry, Seems to work great, I haven't shot wit it yet, but honestly looks cool. I do have one complaint the 5th extra round is extremely hard to put in, so I cant carry 20+1 I my once 15 round mag. With that being said I'm fine with 19+1!
Pros:
  • 4 extra rounds looks good
Cons:
  • Can't get in 5 extra round
Best Used for:
  • EDC & range
Would recommend: Yes
Was it helpful to you? Yes | No
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just works

by gnzo, Verified Owner from WI, United States Written on May 11, 2024
Best part is they also work with the magpul amag 17
Would recommend: Yes
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great looking

by Carlos, Verified Owner from TX, United States Written on March 6, 2024
So they arent a true +5 extension but they look amazing which is good enough for me. They are easy and quick to install and clamp on tight. Only gripe is not on the product but on the dhl shipping which takes forever to get to me.
Would recommend: Yes
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Faulse Advertisement +5 Rounds Extended was Actually +3 Rounds Extended

by Jake De Muss, Verified Owner from New Zealand Written on February 9, 2024
I bought six Strike Industries 5-Round Extended Magazine Plates for my Sig Sauer P320 OEM 21-round magazines and none of the OEM magazines will take more than +3 rounds. All of the P320 21-round magazines bottomed out at 24 rounds, instead of the advertised 26 (21+5). This was used with the Strike Industries supplied extended magazine springs. I should have watched the YouTube video reviews before I bought this!!!
Pros:
  • None
Cons:
  • not as advertised
Best Used for:
  • Paperweight
Would recommend: No
0 of 4 found the following review helpful.
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