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Reviews & Ratings for Strike Industries SIG Sauer P320 9mm 5 Round Extended Magazine Plate — 14 reviews

(14 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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strike mag extension 4 Sig 320 review

by DRSR, Verified Owner from AZ, United States Written on January 3, 2026
Package arrived in estimated delivery time, unblemished and in new condition. The mag extensions like most strike products are awesome . The look and fde finish are nice, but the thing I like the most them is the unique mounting/locking system. They also load and feed ammo well.
Would recommend: Yes
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Great design

by Smoke, from AL, United States Written on December 2, 2025
Well made. Quality is real nice. Would buy more if the price was lower. Would like more color options.
Would recommend: Yes
Was it helpful to you? Yes | No
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Strike Industries Baseplates are Brilliant!

by Russ, Verified Owner from GA, United States Written on October 14, 2025
I've always been a big fan of strike industries I've bought several products for ARS and pistols so when I saw this product it was a no Brainer. The product were shipped to me quickly thru OP and once received I I stantly knew I was satisfied baseplates are solid and made of aluminium Installation was easy and stariaght forward and they look great. They say they are +5 but I was only able to fit 24rds however I think different rounds will affect capacity from my experience. Optics planet it my go to shop when I need that product I can't find anywhere else for the price. Tha KS again OP!!
Would recommend: Yes
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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
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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
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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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