I've spent most of the evening playing with my new Crosman DPMS SBR full auto BB rifle. I have owned most of the full auto firearm BB clones but this one has them all beat. Looks and feels like a real M4. Fire controls are the same. 430fps with Daisy zink plated BBs and 445pps with Hornady black diamonds. Gets around 160 power shots with two CO2 bulbs. Very accurate and can keep all shots in an inch at 30ft on semi auto. Comes with a speed loader that has received some bad reviews. I could not get it to work with the Daisy BBs but with the black diamonds it was flawless. The gun itself ran both BBs without a burp. For $169 this was a great deal.