and o rings 228 230 trap and constrain the flow of pressurized gas with respect to port 229 such that the gas can only flow into or from ports 225 and 229 and not be dispersed or intermingled flow into port 225 and exhaust from port 229 the control of which is preferably but not mandatory provided by at least one electrically controlled valve causes a low pressure ram 280 visible in fig4 6 to travel and ultimately activate a high pressure valve poppet valve 260 visible in fig4 6 tied directly to the low pressure ram 280 is bolt 290 which means bolt 290 will advance a paint ball 114 from the breech into a firing position within gun body 120 once the low pressure ram 280 has traveled sufficiently far to set the position of bolt 290 a small additional motion will trigger the actuation of high pressure valve 260 within volumizer 240 this in turn will release high pressure gas which has been stored within volumizer 240 in a rapid burst from where it will pass ultimately through bolt 290 and down the barrel high pressure gas is admitted into volumizer 240 through one or more ports such as 243 245 isolating the ports 243 and 245 are o rings 244 and 246 the o rings 291 292 found on bolt 290 serve to seal feed neck 110 from the blast of high pressure gas during firing so that balls such as ball 112 within feed neck 110 are not blown away from gun body 120 or out of feed neck 110 the remaining features numbered within fig2 pertain to volumizer.