What do you think should Booligan Airsoft do with his ongoing Custom Stubby M4 Project? Would you want him to go HPA, DSG, or what power source (brown gas?). Feel free to suggest... "Doing some more work on my stubby M4 pistol, and it's time to make the decision about internals. Do I go HPA, DSG, or something else entirely? Watch this quick vid to find out!"