Original HK G3 / HK33 blank firing adapter. Produced for the German Army G3 but work on all HK91, G3, PTR91, HK33, HK93, HK53, HK21/11, HK23/13 and clones. These come complete as shown and are stamped HK or Rheinmetall which is rare as most were sub contracted out to other manufactures. Surplus VG condition.G3, HK33, HK21 BLANK FIRING ADAPTER, $8.00https://www.robertrtg.com/store/pc/g3-hk33-hk21-blank-firing-adapter-2p2048.htm
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