It looks like Diles46 of Intrigue Airsoft has fallen in love with the Tippmann Airsoft M4. Find out what he thinks about it in this review... "HPA Airsoft? Co2 Airsoft? Why not both?! The Tippmann Arms Airsoft m4 gives you the option to go either way. This is seriously one of the best, most versatile non AEG, Airsoft M4s!"