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Extra Power Magazine Spring for S&W M&P
Extra Power Magazine Spring for S&W M&P
Extra Power Magazine Spring for S&W M&P
Extra Power Magazine Spring for S&W M&P
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BROWNELLS - Extra Power Magazine Spring for S&W M&P

10 Reviews
Extra Power Magazine Spring for S&W M&P
Brownells #
078000168
MFR #
HIGH CAP S&W M&P EXTRA POWER M
UPC
050806003569
$3.28
Coupon Code
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Specifications
Quantity:
1
Make Model Fit:
Smith & Wesson.M&P
Restriction
Gun Part Restrictions:
Yes
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What is the BROWNELLS - Extra Power Magazine Spring for S&W M&P?

Extra-length magazine spring replaces factory-supplied spring for use with aftermarket magazine extenders and extended base pads that increase round capacity. Gives follower up to 10% more power for smooth, reliable feeding of rounds. Made of certified aerospace-spec chrome silicon wire, then heat-treated and stress-relieved to ISO 9000 standards.


SPECS: Chrome silicon steel wire. Fits S&W M&P pistols chambered in 9mm, .40 S&W, and .357 SIG.


Gun Part Restriction
Gun Parts have restricted shipping to CA.

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S&W M&P EXTRA-POWER MAGAZINE SPRING REVIEWS

4.4
10 Reviews
5 Stars
70%
4 Stars
20%
3 Stars
0%
2 Stars
0%
1 Stars
10%
Reviews Summary
Reviews for the S&W M&P Extra-Power Magazine Springs reflect a mix of satisfaction and some confusion with sizing and shipping costs. Users found the springs notably improved the performance of their magazines, allowing for better feeding and capacity. However, some encountered issues determining the right fit and felt shipping costs were high.
What Reviewers Are Saying
Product Effectiveness
60%
Many users report that these springs significantly enhanced the performance of their magazines, allowing for better feeding and increased capacity. Reviewers noted improvements in functionality, especially when replacing weaker stock springs, making them a popular choice among M&P users.
Shipping Costs
40%
A recurrent theme among the reviews is the perceived high shipping costs associated with purchasing these springs, which some customers found to be discouraging. This has contributed to an overall sense of dissatisfaction regarding the affordability of the product.
Sizing Confusion
30%
There is some confusion about the sizing and compatibility of the springs, with several customers noting that they ordered the wrong type based on the descriptions provided. Clarifications regarding compatibility with specific magazine types could enhance the shopping experience.
Quality and Durability
50%
Customers consistently highlight the quality and durability of the extra-power spring, indicating that they are a reliable upgrade over factory springs. The solid design reduces issues like binding, which enhances user satisfaction.
5
Exactly what I needed!
These S&W extra power springs were exactly what I needed for my mag extenders. I added the extenders and noticed I was getting squibs, so the new springs fixed the problem. Good price on Brownells and got em quick!
Would you recommend this? Yes, I would recommend to a friend
by Michael lythcott on March 13, 2026
Verified Purchase
Was this review helpful? 0
5
Mp springs
Apparently I chose mp springs thinking in MP15-22, but ordered other springs maybe for pistol, so Im still in the search for what I need. To much shipping cost to react.
by EMILIO SANCHEZ on February 24, 2026
Verified Purchase
Was this review helpful? 0
5
True high cap
I had a taran tactical basepad that came with the extra power spring, but would only hold 19 rds. Replaced it with this spring and can now fit 23rds as stated. Not sure what the difference is, but this spring fixed the issue.
by TUCKER SEARS on February 22, 2024
Verified Purchase
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5
M&P Magazine Springs
Great product but shipping is too expensive.
by JAMES WARD on August 21, 2023
Verified Purchase
Was this review helpful? 2
5
Renewed Two Older Magazines Perfectly
I acquired an older M&P, and the previous owner had left both magazines fully-loaded for years without ever shooting the pistol. As a result, the original springs were weakened, causing failures to feed. After installing the "Extra Power Mag Spring" in each magazine, my pistol feeds all kinds of ammo flawlessly. Inexpensive and quick fix!
by Old Centurian on January 18, 2022
Was this review helpful? 1
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Customer Questions
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