Gas operating system.

grabcad

A 'principle of operation' model of a method of delaying a fire arm action. This current model would not work, its has many flaws like premature locking, and no way to control the center piece (the part that holds the firing pin.). I got the idea of this when i looked at some images of the MP5's delayed blow back. About a year and a half ago i designed a more functional version, i will remake it later and put more time into it.