• Reduce 70% of Failure-To-Feed (FTF) malfunctions
  • Extra Power Replacement Springs to Magazine Improve Feeding Operations
  • Heavy Gauge Premium Spring Steel 
  • 15% Stronger AR-15 Magazine Spring over Factory Mag Spring
  • Works for GI Mags, Magpul PMAG's, ProMags and similar variations of these (Except Hexmags)
  • Change fully loaded magazines every 90 days by unloading and reloading a different fresh magazine.
  • Protected by the M*CARBO 100% Lifetime Guarantee
  • Made in the USA!
  • Fast Same Day Shipping!

AR-15 Extra Power 30 Round Magazine Spring Replacement:

  • Heavy Gauge Premium Spring Steel Extra Power AR-15 Magazine Spring Replacement
  • Works for GI Mags, Magpul PMAG's, ProMags and similar variations of these (Except Hexmags)

15% Stronger AR-15 Magazine Spring over Factory Mag Spring

    When leaving your 30 round magazine loaded for any extended period of time your magazine spring will eventually take a set, thereby reducing the amount of load it can handle. This results in a weaker magazine spring that will not properly present the next round for your bolt to grab and feed into the chamber.

    Remember to change out your fully loaded magazines every 90 days by unloading and reloading a different fresh magazine.

    Replace your weaker factory AR-15 mag spring with the Best Extra Power AR-15 Mag Spring that will last longer and provide greater operating performance. If you are rebuilding your GI Mags or just upgrading your brand new PMAG's it's worth doing now before your next Failure-To-Feed Malfunction. You should also use this opportunity to clean the inside of the magazine, inspect the follower and floor plate and inspect the feed lips for any damage or cracking. It's a great preventative maintenance that should be conducted every 3 months to ensure reliability of your AR-15.

    The M*CARBO Extra Power Mag Springs improve reliability a lot, rebuild or not!

    If you plan to store your mags fully loaded like the rest of us then over time you should be concerned that your factory mag spring will eventually loose it's intended stiffness. It never a bad idea to keep back-up replacement parts in case if there is panic buying in the future as happened in the past. If you have a 10 round blocked magazine and you move to a state where 30 round mags are allowed, you can use these to convert the restricted mags.

    AR-15 Extra Power 30 Round Mag Springs will work for GI Mags, Magpul PMAG's, ProMags and similar variations of these.  **Will not work for Hexmags**

    Most Shooters report that these M*CARBO Extra Power AR-15 Mag Springs feed much better than factory and provide more reliably. The stiffer magazine spring puts more tension between the floorplate and follower, while holding 30 rounds per mag. Go ahead and switch out the weaker standard mag springs with the Best AR 15 Extra Power Mag Springs to give yourself the most reliability and performance out of your AR.

    AR-15 Resources:

    Use the following AR-15 Resources to further enhance your firearm. Download the Official Army Training Manual. Use the different Exploded Views of the AR-15 Parts Diagram to plan your next firearm project. Print or Download any of the AR-15 Resources.

    100% Lifetime Guarantee:

    The AR-15 Magazine Spring Kit is protected by the M*CARBO No Hassle 100% Lifetime Guarantee against any product quality issues or workmanship defects. If parts fail or are deemed defective we will send you a replacement regardless.


    Tested and Approved:

    The AR-15 Magazine Spring Kit has been tested with numerous brands of civilian and military grade ammunition to ensure reliable operation and safety.


    Veteran Owned and Operated Business:

    American made gun parts designed and manufactured by Combat Veterans. We will donate a portion of the proceeds of your purchase to the Military Foundations we humbly support.


    ATTENTION:

    You must be 18 yrs of age to purchase. We advise that all parts purchased from our inventory be installed and inspected by a qualified gunsmith. Installation by M*CARBO is available and recommended. Modifying your weapon may be prohibited in your state. Do not modify your sear or hammer engagement surfaces, with or without this AR-15 Magazine Spring Kit. Before installing please be sure to check all local state and federal laws. By installing this part you agree to take full responsibility for any and all legal, health and warranty consequences that may be incurred.

    Q: How does this spring affect the feed lips on polymer mags? Would the extra tension cause them to "flex" sooner?

    A: The extra tension won't compromise the structural integrity of the feed lips. We designed this spring to provide extra power but not so much that it creates extra problems. Thanks for asking that one.

    No Hassle M*CARBO 100% Lifetime Guarantee - This means that at any time you can send it back and we will exchange it, issue a refund or assist you in any way possible. No Hassles Ever!

    We pride ourselves in making quality parts for guys like us that appreciate great performance out of a well made firearm. So if you don't get the results you we're expecting or just don't like it. We will make it right by any means necessary. Send us an email to help@mcarbo.com We also pride ourselves in outstanding customer service so send us an email and we will show you.

    Once you're part of the M*CARBO Brotherhood your not just a customer...you're a Brother! M*CARBO Brotherhood - Veterans, Police Officers and 2nd Amendment Patriots! A portion of all sales go to the Military Foundations we humbly support.

    ATTENTION: We advise that all parts purchased from our inventory be installed and inspected by a qualified gunsmith. Modifying your weapon my be prohibited in your state. Before installing please be sure to check all local state and federal laws. By installing this part you agree to take full responsibility for any and all legal, health and warranty consequences that my be incurred.

    Overall Customer Rating of 122 Reviews:
    Washington State

    High Quality and Affordable

    Rating:
    Pros:
    Cons:
    Fast shipping, affordable, and high quality. Works really well with my AR 30-Round PMAGS

    Excellence.

    Rating:
    Pros:
    Cons:
    I used these springs to replace the original magazine springs that came with my ASC mags. Installation was easy, spring tension was stiffer (as advertised) and they exhibited extra pressure, ensuring each round was quickly and properly presented for the bolt. High Quality Parts from a High Quality Company.

    CA

    Works great

    Rating:
    Pros:
    Cons:
    You can feel the difference right out the box. Im glad i got a 3 pack.

    Rating:
    Pros:
    Cons:
    Works great!

    Clovis

    Mag spring

    Rating:
    Pros:
    Cons:
    The minute I got out of the bag I could tell the difference in the quality of the spring. I only ordered 4 just in case they were not what were saying to be. I will be ordered more to change all my mags. Thanks mcarbo Go Navy