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50 Round Drum - MP5, MP5K 9mm

SKU: HKP-16537
Brand: F5MFG

HK MP5 & MP5K 9mm - 50 Round Drum

New 2nd generation redesigned version. Now offered at an even lower price!

You asked for it and the long-awaited and highly anticipated MP5 50 Round Drum Magazine designed for your favorite MP5 or MP5 clone. Each drum is engineered around the HK designed and tested proven coil magazine technology. Each drum allows side by side staging of ammunition in a single stack capacity. With the help of the patented tension relief device, the drum magazine can operate for an almost unlimited number of spring loads and can even perform in weapons with capabilities of up to 800-900 rounds per minute. The streamlined design allows for zero separation of the ammunition during operation which prevents malfunctions and allows for an exceptionally compact profile. Each drum holds 50 rounds of 9mm in a shorter and more compact manner than the standard 30 round magazine. Manufactured of the highest grade materials which give it unparalleled reliability and strength. The critical components of the mechanism are coated in Cerakote for friction reduction and proven reliability without the need for lubrication.

Compatible with these Models

  • HK MP5
  • HK 94
  • HK MP5K
  • HK SP89
  • HK SP5K


  • Heckler and Koch
  • Dakota Tactical
  • Zenith / MKE Firearms
  • POF
  • Omega

Please note that we can not guarantee fit with out of spec clone firearms.

More details...
Origin: USA
Caliber: 9mm
Generation: 2nd
Magazine Capacity: 50
922r Value: 3
Price: $199.95
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50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
50 Round Drum - MP5, MP5K 9mm
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Product Details

Install & adjustment instructions:

MP5 50 round drum mag has been in development and testing for over a year. We've found that mag well dimensions vary from different manufacturers just enough to make a precision machined part fit loose in one mfg. and tight in another (HK for example). Given this scenario, we've overcome this obstacle to make for reliable feed/function thru an adjustable shim system.

A tighter fit vs loose (loose being 1/8" max front to back play) is required for reliable feeding of the magazine.

Insert magazine in mag well and observe fitment, the aluminum shim is malleable and will show witness marks.

These will be visible (normal). This can be considered part of the wear in/break-in procedure.

If too tight, the shim can be adjusted by peeling back one of 6 layers that are .003 thick to achieve the desired fitment.

The procedure for removing layers of aluminum shim are accomplished by using a razor blade to pick up an edge or corner of the material and peeling it back.

Please note on the HK SP5K models the magwell is extra small and tight and will not fit this drum without modifications. If you need an SP5K model please make a note so we can send you one that has been machined for the tighter magwell.

See attached link for reference -

Shims are replaceable if needed.

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