HK21 Factory Magazine Adapter RARE!


HK German made. Magazine adapter slides in where the feed mechanism would be and allows use of any HK G3 & HK 91 magazine. This is the best variation of the magazine adapter ever made and it is rare. This is a must for every HK21 owner. Adapts the 100 round beta magazines and the AA50 round HK G3 & HK 91 Drums. NOT FOR USE ON THE HK21E MODELS. ONLY THE OLDER HK21 STYLE FIREARMS.

  • Brand: HKPARTS

In stock

SKU: HKP-00233

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