not sure what you are referring to, but i was wondering if the small HPA bottles would fit into one of the box mags to convert it to HPA.
with the issues of finding appropriate CO2 capsules for the CO2 box mag, and the significant amount of green gas the regular tank swallows, im becoming more and more convinced that HPA is way to go, but i am dubious about running a full size HPA tank and external line for the same reasons
@Austeyr mentioned (snagging). its for this reason alone that i dont own more HPA guns and no longer run my Tippmann M4 as often as i used to.
I am also debating whether to keep using the casette mags once i do convert it to HPA, seeing as i have 12 spare cassette mags, or do the AEG box mag conversion.