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Riva 510 and M1A1 tank[/h]

Just kicked my starter e-cig to the curb for my new Riva 510 1100Mah,and was wondering if it is possible to install a M1A1tank on this e-cig or is there another tank that is more suitable.Also what drip tip fits the carto for the Riva,the 510 delrin is a little bit to large.
Any suggestions or comments
Any suggestions or comments