This marker is amazing! I prefer it over my ion, its faster and alot better. This is my first autococker and i just love it. It cheaper then ion. It keeps up well w/ my brothers PMR. Feedneck sucks..... I had to sand down my hopper and add a little bit of oil and it went in.
Conclusion:
Buy this over ion. Dunhams, Sporth Authority, and Dicks Sporting Goods have 20% off the marker. GET THIS IF YOUR LOW ON MONEY!!!