These Original HK parts are just what you need to make your HK91-G3 function the way it was designed to.  Originally all HK91-G3 rifles had Paddle or Flapper mag releases.  When converting HK receivers to Semi Auto Status HK removed the Paddle from your HK.  You can Legally have the Flapper Re-Installed as per AFT instructions.

HK Flapper/Paddle mag Release $12
HK Flapper/Paddle with Bushing Combo $15 (on receiver stub)
 
 

Back to HK91 - G3 Parts Page