Its too expensive for starters. If you want big muzzle flash then it needs to be a live fire Thompson. Do you have $40,000 laying around? Plus the laws associated with having such a thing are strict. The spas cage is $1000 - $2500. You need a 870 shotgun which runs $500. You also need to be well versed on how to assemble a Pulse Rifle. They are NOT easy to build.