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Heckler & Koch P9S Magazine

The Heckler & Koch P9S Magazine from United Defense is a 9-round, single-stack replacement magazine chambered for 9x19mm Parabellum. Patterned after the original H&K factory magazine, it features all-steel construction, a properly tuned spring and follower, and a heel-release cut that drops straight into the P9S without fitting. Original P9S magazines are scarce and expensive, so this aftermarket option lets you retire your factory mags and keep feeding your pistol with confidence. A smart pickup for any P9S owner who actually shoots his pistol at the range.

In stock

SKU
P9SMAG
Color
Black
$24.95
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  • Buy 2 for $22.46 each and save 10%
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Description

Features

  1. 9-Round Capacity — Holds a full nine rounds of 9x19mm Parabellum, matching the original factory magazine count for the HK P9S.
  2. Built For The HK P9S — Patterned after the original Heckler & Koch factory magazine to drop in and feed reliably in the P9S 9mm pistol.
  3. Single-Stack Design — True single-column layout maintains the slim grip profile the P9S was designed around.
  4. All-Steel Construction — Steel body and floorplate stand up to repeated loading, hard use, and decades of service.
  5. Reliable Spring And Follower — Properly tensioned internal spring and follower deliver consistent feeding from the first round to the last.
  6. Heel-Release Compatible — Cut for the P9S heel-mounted European magazine catch, with no fitting required.
  7. Saves Your Originals — An affordable alternative that lets you retire scarce, expensive factory P9S magazines and keep shooting.
  8. Manufactured By United Defense — Built and backed by United Defense LLC, a trusted aftermarket source for hard-to-find pistol magazines.

More Information

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Customer Reviews

5

24 reviews

96% of customers recommend this product

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  1. Jerry T

    Verified Buyer

    Finally shoot my P9S again

    Overall Rating

    Value

    Price

    Quality

    Been sitting on my old P9S for years cause the factory mags cost a fortune and I didnt want to wear them out. Ordered a couple of these and they dropped right in with that heel release, no fitting or filing needed at all. Ran a whole box of 9mm through with zero hiccups, feeds nice and smooth. Only thing is the spring feels a little stiff loading that last round or two but that will loosen up.

    Way cheaper than factory HK mags

    Spring stiff on the last rounds

  2. P9SFan

    Verified Buyer

    Finally, a Mag That Doesn't Cost a Kidney

    Value

    Overall Rating

    Price

    Quality

    Carried a P9S back in the day and still shoot mine on weekends......finding factory H&K mags for this gun is basically unobtanium at this point, and when you do find an original surplus one it's $80–100 for something with worn feed lips and a spring that's been compressed since the Carter administration. This United Defense mag is all-steel, single-stack, correct 9-round capacity, and the heel-release cut is spot on to the factory spec. Dropped it in, loaded it up with 115gr ball, and ran 150 rounds without a single hiccup. Spring tension is actually a bit stiffer than my original factory mags, which makes sense given the originals are 40+ years old, but it smoothed out after a few load cycles. For roughly $25 this is a no-brainer if you actually shoot your P9S instead of locking it in a safe.

    All-steel construction matches factory H&K spec

    Spring is noticeably stiffer than vintage OEM mags out of the box

  3. Pro Star

    Verified Buyer

    Works perfect no issues at all.

    Value

    Overall Rating

    Price

    Quality

    Been looking everywhere for spare mags for my P9S and finally found them here.
  4. NewToGuns2023

    Verified Buyer

    Worried But Now a Believer

    Value

    Overall Rating

    Price

    Quality

    First time buying mags and i was nervous after bad experiences with other brands. These loaded easy even with my small hands and fed every round during my first range trip with Blazer Brass. The instructions said to expect some stiffness but it got smoother after 50 rounds. My instructor said these look like OEM quality and he's used to seeing $100+ mags. Anyways, super happy with this purchase and will buy more.

    Easy for new shooters,No jams,Durable steel build

  5. RollerDelayed

    Verified Buyer

    Finally I can stop babying my factory mags

    Value

    Overall Rating

    Price

    Quality

    If you own a P9S you already know the situation original H&K factory mags are basically unobtanium and when you do find one its $80-100 for a beat up surplus mag with worn feed lips. This United Defense mag changes the whole equation. The all-steel construction is solid and the build quality is correct to original H&K spec same single-stack layout, same heel-release cut, same 9 round capacity. Dropped one into my P9S and it locked in perfect with the heel catch, no fitting required and no wobble. Ran 100 rounds of Winchester white box and some Federal HST through it at the range without a single hiccup. Now my two original H&K mags get to live in the safe while I beat on these for actual range work. At this price its a no brainer for any P9S owner who actually shoots his pistol.

    All-steel construction stands up to range abuse without bending or fatigue
    Drops straight into the P9S heel release with zero fitting required

    9 rounds is the original spec but feels light compared to modern double-stack mags
    The new finish is obviously different than the patina on original H&K mags if matching aesthetics matters

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