Your basket is empty.

Basket

Help and contact

Free standard delivery over £199

100-day return policy

Brownells UK - World's Largest Supplier of Gun Parts, Gunsmith Tools & Shooting Accessories

United Kingdom

My Account (Sign in)

Shopping list

(0)

Basket

Newsletter

Sale

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

078000168

Description
Ratings (3)

Applies More Pressure To Follower For Smooth Feeding From Extended Magazines

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.

More...

Customer ratings for BROWNELLS S&W M&P EXTRA POWER MAG SPRING

Number of ratings: 3
From brownells.com: 3
Average rating: 4.7

Fits my M&P 9 10 round magazine (08/05/2011)

These are great springs. I could not find any springs specifically for the 10-round magazine for my M&P 9 so I bought these, hoping I could make them fit. They fit perfectly and they work even better then the stock springs. These springs do not hook into the hole on the magazine follower, but I do not see this as a problem.[...]

Thank goodness (14/09/2013)

Since S&W has, for whatever reason, chosen to leave us M&P users high and dry I had to find used mags that needed spring replacement. Thanks Brownells for this quality product. The used mags now function like the factory new mags.

better than the factory! (20/09/2014)

I have been using these for the extended 45mags for a few months now and have had good results. The factory springs were designed poorly and with the taper would it would impinge on itself then bind up and become useless and it was almost impossible to get the 14th rnd in. These are more of a solid design and won't bind on themselves. I have had issue with the mags not actuating the slide catch on the last round and failing to lock back but it is still better than the factory ones binding half way through a mag. (Note: The description can be deceiving when it says high capacity. I don't think they were intended for the 14rnd 45 mags but they do work better than the factory)

Read 3 more ratings on brownells.com

9.9 9.9 1 GBP

Product no.: 078000168
BROWNELLS S&W M&P EXTRA POWER MAG SPRING 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.

9.9 GBP 6 £9.90 *

Delivery time approx. 7-14 days.
6 pcs. in the USA warehouse

Specs: Make: Smith & Wesson Model: M&P Quantity: 1

Add to shopping list

Ask question

Details

Add to shopping list

Ask question

Top takeaways

Extra-length magazine spring designed for use with aftermarket magazine extenders and extended base pads.
Made from aerospace-spec chrome silicon wire and heat-treated to ISO 9000 standards for increased reliability.
Compatible with S&W M&P pistols in 9mm, .40 S&W, and .357 SIG, providing up to 10% more power to the follower.

Attributes

Make: Smith & Wesson Model: M&P Delivery weight: 0.009kg

Item details

Made in USA

Upgrade your S&W M&P with BROWNELLS Extra-Power Magazine Spring 🌟 Ensure smooth feeding with a 10% power boost! Perfect for extended mags. Shop now! 🔫

Description
Ratings (3)

Applies More Pressure To Follower For Smooth Feeding From Extended Magazines

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

More...

Customer ratings for BROWNELLS S&W M&P EXTRA POWER MAG SPRING

Number of ratings: 3
From brownells.com: 3
Average rating: 4.7

Fits my M&P 9 10 round magazine (08/05/2011)

Thank goodness (14/09/2013)

better than the factory! (20/09/2014)

Read 3 more ratings on brownells.com

Forgot your password?
Register

Why order from us?

Unrivaled Product Selection

You want it? We got it!

Expert Customer Advice

Via Phone, Chat & Email

US Goods to your doorstep

No customs, no problems

100 days Returns

Shop with a peace of mind

Offers, Promotions & Exclusive Products

Through our weekly newsletter

Shamelessly Honest

We encourage critical product review

Fair Pricing

We pursue a sustainable pricing policy

We won't leave you stranded

Our entire team is made up of passionate gun enthusiasts

Site Navigation

Product Categories

Ordering

Customer Service

Connect

Secure payment methods

Trade Associations

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.