If buying a Hill pump several (okay 2) people I know say the latest greatest MK4 is NOT as good as the MK3 , mechanical issues/internal machining.???????????????
I do NOT pump (anymore, it isn't hard for anyone healthy though) but do own the hand pump flyingdragon sells for $160.00 , it was $140 when first released. I can only go by the pictures on PA's site bit it seems in every way to be the "G6" only $40.00 less costly. Same spare parts (comes with rebuild which is nice), wrench, airguage by "shark", same fittings, dead head-nice touch), folding legs, yellow plastic caps,........ .
Works well, does pump to 4,500 but I should say I could only get little lady to pump the hose w/dead head in place, she had no problem with that. I did also lend it to a friend just getting into airguns who had no air, he pot a bit of use on it w/out issue filling a couple of rifles.
I truly do believe the G6 IS the same pump, as long as that is the case "I" could recommend it. Though "I" would pay the lower price so I could get more pellets.
When pcp hand pumps were new (FX 1st, then Hill and no one else) to the market it WAS recommend by the manufacturer to "pump 50 strokes, then allow pump to cool" That's what I did with my first FX hand pump, left the handle in the up position for cooling, maybe 2 minutes often just one minute then 50 more pumps, every 100-150 pumps (as recommended by FX) open bleed valve fast to vent liquid build up in the glass beads. Filled several career 707's a career ultra, a "44 Big-Bore" and some others almost daily for over 4 years w/out a problem.
If there are no flaws in the machining, quality O-rings used, lube with sllycone grease (sparingly ) any of the should last.
Some years later "airforce" introduced the first hand pump that was junk. Thinking ot was a sunoptics pump, mot certain. Whom ever makes the "Benjaim" mhand pump was the first to recommend, in print on their site and in emails, lubing with flammable motor oil, a recommendation which was later, after more than one "minor" explosion changed- gee instills faith in them knowing whats what with HIGH psi.
Sorry to ramble.
The G6 or FD pump is good and comes with rebuild kit.
John