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HK 9mm Hammer Spring
Our Products - HK MP5K & PDW Parts > MP5K - Trigger Pack, Grip, Lower > MP5K - Trigger Packs

HK 9mm Hammer Spring will work in all 9mm & 40/10 trigger packs. Great upgrade for all of the clones that use the incorrect hammer spring.


SKU: HKN11070
Brand: Heckler & Koch
Origin: German

MPN: 201638

UPC: 642230141940

In Stock
Price: $11.95
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HK 9mm Hammer Spring
HK 9mm Hammer Spring
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9mm Ejector Lever For MP5, 94, MP5K, SP89

9mm Ejector Lever For MP5, 94, MP5K, SP89

Price $49.95

Add to the cart: 9mm Ejector Lever For MP5, 94, MP5K, SP89

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"Must have for MP5 clones"

Mark Whitfield on 5/14/2012 2:58:15 PM

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Comments and Suggestions: If you are like me and have a MP5 clone that does not eject properly, this spring is a must. A common problem for clones, is that they don't have the correct hammer spring installed from the product maker. They in fact have G3-308 hammer springs. These are to heavy and will cause your bolt to slow down enough so that your spent casing does not eject properly causing the gun to jam. After installing this part and a few others my MP5K runs like a sowing machine. Thanks again hkparts.net for the gr... More details

"Replace that 7.62 hammer spring with the right one!"

James on 1/30/2012 12:24:30 PM

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Comments and Suggestions: If you are short stroking with weaker ammo, the heavier hk33/g3 hammer spring could be the culprit.

"hammer spring"

scott morris on 12/1/2011 9:02:25 PM

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Comments and Suggestions: High quality spring and fast delivery

"shoot subsonic"

kevin wood on 9/7/2011 8:32:26 PM

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Comments and Suggestions: After getting the g3 22 kit, I stumbled onto some info that by changing the 308 G3 spring with this hammer spring you could shoot lower velocity rounds,its been silent subsonic ever since, thanks HK parts for the excellent service.