Sorry didnt mean to be so short in my answer, someone came in my office lol
Its HKs .22cal version of the MP5
Thing is a real blast (pardon the pun) Ive owned/own full auto guns,(tax stamp) but they just get too expensive to feed. I worked for an indoor range / gunshop and got everything at cost, making it affordable at the time. Add in the fact that the kids are getting older, and college is around the corner, this gun fills the niche, and is a heck of alot cheaper to shoot
If ur ever in the PA area let me know, we'll go make some noise!