Just received and tried out my new Crosman DMPS SBR BB rifle. Build quality is pretty decent and I had no problems. Magazine holds only 25 rounds and goes pretty fast. Can shoot in semi or full automatic. The full auto is a blast to shoot but you will run out of Co2 pretty fast. The magazine holds 2 Co2 tubes but you can go with using one. just remember to put it in the chamber marked first. All in all a pretty good plinker for under $200.00 especially with the full auto feature.