Chris3 and Xrad,I will be sending you a picture of the King Tiger Barrels we are making for the C02 Gun System, these are much less costly and I believe you will find the Brass section a very smooth recoil material as the Barrel O.D.and the guide tube I.D. are a very close tolerance. This provides a smooth recoil and does not require the barrel to be painted except for the barrel section that is exposed when fully extended. Sax