POPS stands for Push-On-Purge-System and is a completely new concept in On/Off/Purging ASAs. The idea is simple, push back on the front 'Bonnet' section of the POPS and this depresses the air system valve pin - gassing up the marker - before latching itself into place; the operation takes just a fraction of a second. Once gassed up the bonnet stays in position until the push button on the side of the POPS bonnet is depressed, at which point the bonnet POPS forward and the marker purges itself of air; again, de-gassing takes a fraction of a second and very little effort. The new POPS features, T-Slot mounting to the frame, but this time with a longer adjustment range than on previous Eclipse ASAs. The POPS also incorporates front porting for the first time on an Eclipse ASA, together with a new fitting that seals without the need for Loc-tite or PTFE tape and which can be quickly and easily removed with a hex key.