[Bolt Mp5 Sd Conversion]

Hi gents, 

Got a bolt MP5 which I want to convert to SD version, has anyone done this or know how? 
can’t seem to find any info on parts or anything from BOLT 

[Topic Finished]

I had this exact issue 

My first gun and first game, spent most of trying to unjam my mags and make it feed 

I returned the high caps and have gone to mid caps, yet to try them but spoke to a few at my local sights and what they all recommended