There is a gas MP5K blowback rifle Gel Blaster under the NWell brand that is available at X-Force Tactical and here is their review... "We bring you a new generation of gel blasters, being gas operated these will excite a few guys. The MP5K is no exception being one of the favorites amongst enthusiasts and players for its compact size and cool looks. We take a close look at the Wells model and also take it for a firing test and chrono."