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FAB Defense MPS-12 Magazine Extension fx-mps12b Color: Black, Magazine Capacity: 4 Round, 22% Off

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FAB Defense MPS-12 Magazine Extension, 4 Rounds, M&P9 SHIELD, Black, fx-mps12b
FAB Defense MPS-12 Magazine Extension, 4 Rounds, M&P9 SHIELD, Black, fx-mps12b
FAB Defense MPS-12 Magazine Extension, 4 Rounds, M&P9 SHIELD, Black, fx-mps12b
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FAB Defense MPS-12 Magazine Extension, 4 Rounds, M&P9 SHIELD, Black, fx-mps12b
FAB Defense MPS-12 Magazine Extension, 4 Rounds, M&P9 SHIELD, Black, fx-mps12b
2 of 2 images
FAB Defense MPS-12 Magazine Extension, 4 Rounds, M&P9 SHIELD, Black, fx-mps12b

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Questions & Answers
Does this work with the factory spring that comes in the factory 8 round magazine? Manufacturer Answer

Yes it will

by FAB Defense, Manufacturer, June 26, 2025
See 1 More Answer
does it work with the 8 round shield mag? Expert Answer

Yes, this works with the 8 Round, S&W M&P®9 SHIELD™ - original factory extend capacity magazine only

by Bethany Kopel, Gear Expert, February 22, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review Can use it for 9mm or .40 m&p shields by Crom, Verified Owner, January 17, 2021
No issues with feeding fo both caliber. Great product. I would recommend for those who want extra rds. 2 rds for M&p 9 and 3 rds for M&p 40. Just don’t include the spring retention that come with the product for the 40 and you are all set. Will only ...
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6/6 found this helpful
Helpful Positive Review It does exactly what it says it does by Jeffery Willett, Verified Owner, August 28, 2021
This extension came well packaged with Illustrated instructions and even came with the Allen wrench required for assembly. After laying out my dissassembled 8 round mag, this kit, and reading the instructions it Took less then five minutes to install...
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3/3 found this helpful
Helpful Positive Review Great Product by Jim, Verified Owner, February 24, 2022
So I have 4 of these now. The only issue I have which isn't a hard fix, is they don't fit in my M&P Compact. Solution: take sand paper and sand down the gap piece a little and it should lock in. Other then that, I love having these!
1/1 found this helpful
Helpful Negative Review Doesn't Work by Nate, Verified Owner, September 13, 2022
I purchased two of these. Both failed to fit 12 rounds. With force, I could fit only 10. When feeding, the rounds pointed downward, catching on the front of the magazine. This is dangerous. Part of the issue seemed to be the spring. The two extension...
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2/2 found this helpful
Most Recent Reviews its 8+2=10 9mm by Roy Arpon, Verified Owner, May 30, 2025
You can only fit 10 9mm after install. The add says 8+4. I guess who ever made the description can’t add or skipped grade school.
Most Recent Reviews fab defense mps-12 mag ext by Joshua Chunn, Verified Owner, January 25, 2025
Bought this for my m&p shield 40 and it works perfect easy to install and feeds rounds fine definitely ordering more
Read All 10 Reviews
Color: Black Magazine Capacity: 4 RoundGun Make: Smith & Wesson Gun Model: Smith & Wesson M&P Shield Condition: New

Code: 1S0-PME-MPSE-fx-mps12b-4RD

MPN: fx-mps12b

UPC: 7290111585012

List: $29.99Save 22%
$23.39

Product Info for FAB Defense MPS-12 Magazine Extension

Maximize your Smith & Wesson M&P 9 SHIELD's effectiveness with the FAB Defense M&P 9 SHIELD Grip Magazine Extension +4. The FAB Defense M&P 9 SHIELD Polymer Grip Magazine Extension adds 4 more rounds to your Smith and Wesson magazine in a way that maintains its low profile. The special ergonomic design enables secure manipulation of the magazine and a full grip on the weapon when the magazine is in use, making the FAB Defense SHIELD Grip Magazine +4 Extension Grip a must-have for those situations that conceal-and-carries like the M&P 9 SHIELD were made for.image

Specifications for FAB Defense MPS-12 Magazine Extension:

Manufacturer: FAB Defense
Color: Black
Magazine Capacity: 4 Round
Gun Make: Smith & Wesson
Gun Model: Smith & Wesson M&P Shield
Condition: New

Features of FAB Defense MPS-12 Magazine Extension

  • Adds 4 rounds for a total of 10 rounds in the magazine!
  • Enables a full grip on the handgun
  • Contoured finger indents for a firm grip during magazine manipulation
  • Innovative spring plate allows the use of the original magazine spring
  • Fiberglass reinforced polymer construction
  • Available in Matte Black with additional colors to follow
  • Smith & Wesson M&P 9 SHIELD

Package Contents:

  • FAB Defense MPS-12 Magazine Extension

FAB Defense MPS-12 Magazine Extension Orderable Models

List of Orderable Models

FAB Defense MPS-12 Magazine Extension, 4 Rounds, M&P9 SHIELD, Black, fx-mps12b , MPN: fx-mps12b , UPC: 7290111585012 , Code: 1S0-PME-MPSE-fx-mps12b-4RD
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