I FIND IN WET WEATHER TO USE A PLASTIC SANDWHICH BAG OVER THE MUZZEL WITH A RUBBER BAND KEEPS THE WATER OUT OF THE BARREL .
I YET HAD A MIS-FIRE WITH MY THUNDERHAWK,I ALSO SEEM TO FAVOR THE RWS 1075 CAPS NO#11 OVER THE 209 PRIMER,REASON THEY FIT SO TIGHT THEY ALSO KEEP MOISTURE OUT OF THE NIPPLE AREA.
I DID USE THE OTHER DAY FOR THE FIRST TIME THE CO2 DISCHARGES,MAN THEY ARE GREAT WOULD RECOMMEND THEM TO ANYONE THAT WANTS TO REMOVE A LOAD WITHOUT FIRING THE GUN.
I FOUND ALSO THAT IN MY THUNDERHAWK I USE THE NOSLERS FULL PARTITION BULLET AND AFTER THEY ARE REMOVED WITH THE CO2 DISCHAGERS THEY CAN BE REUSED AGAIN.