The purpose of this manual is to present the necessary engineering date, manufacturing procedures, and machinist drawings for conversion of the semi-automatic H&K-91 and H&K-93 rifles into selective-fire weapons.
In their modified condition, these weapons will function in basically the same manner as their military counterparts, the G-3 and H&K-33. Full auto rates of fire for the converted rifles will approximate rates of fire in the original, selective-fire weapons.
Minor design changes in the commercial HK91 and HK93 have made exact duplication of the military versions impractical. However, the information presented in this manual will explain and show these differences, as well as providing the information required for successful conversion.
Conversion of the HK 91/93 to full auto is illegal without obtaining BATF approval first.