Facts:   - birth name: ludwig vorgrimler    - death date: 10 january 1983      - birth date: 07 september 1912    - name: ludwig vorgrimler    - birth place: freiburg , german empire    - occupation: inventor , engineer   Based on these bullet points, write a short biography describing the life of ludwig vorgrimler .
The answer to this question is:
dr. ludwig vorgrimler -lrb- september 7 , 1912 in freiburg , germany -- february , 23 , 1983 -rrb- is the man most commonly associated with the design of the spanish roller-delayed cetme rifle , and its prolific offspring from the german gunmaker heckler & koch such as the g3 and mp5 .