Here's the hpa'd ratty. It now has an HW moderator with a JSRamsbottom adaptor. Blimey it's quiet!!
There is a co2 eliminator, black 'hollow probe' steel breech, re-seal kit and 90 degree 1/8 NPT elbow from GMAC/EuroCustomParts
http://www.eurocustomparts.com/epages/BT4370.sf/en_GB/?ObjectPath=/Shops/BT4370/Categories
A 1/8 to 1/8 NPT hose and bottle mount and an in-line shut-off valve from RAP4
http://www.rap4uk.com
And some NPT/BSP/Quick fill bits from BestFittings
http://www.bestfittings.co.uk/
The bottle and reg I bought second hand - I fill it to 3000 lbs/psi / 200 bar
The bottle mount is bolted to the underside of the hand grip. I had to drill a largish hole on the grip where base of your thumb goes to get a screwdriver in. This has been filled with a rubber bung. The bottle mount has a spacer which was made from a wooden door stop cut down and sprayed matt black.
The air bottle screws into the shut off valve which screws into the bottle mount. There is a male 1/8 NPT to male 1/8 BSP adaptor screwed into the end of the bottle mount - then there is a bonded washer and a 1/8 BSP quick fill nipple.
At the other end the CO2 eliminator screws into the CO2 tube and a 1/8 NPT 90 degree elbow screws into that. The 1/8 NPT to 1/8 NPT hose screws into the elbow and terminates in a 1/8 NPT barrel nut into which is screwed a 1/8 BSP quick fill coupler.
The quick coupler and in line shutoff valve allow the rifle to be quickly and easily 'taken down'. After you've fired your last shut, shut off the valve - dry fire a few times to remove the air from the tubing and then unscrew the bottle and unclip the quick coupler and the stock can be removed from the action.
I'm really pleased at how it's all gone together. The point of balance is bob on - right on the pistol grip. I really like how it all packs away in a small, discrete case (see bottom pic). The gun is just as point-able as before. I've kept the 14" barrel. The bottle mount has a slight twist so the bottle is under my arm instead of digging into my side.
There is a *very* small leak somewhere - I need to undo all the fittings and reapply the PTFE tape (I may try PTFE spray), but it takes many hours to lose air.
The weight of the gun 'ready to fire' (scope on, moderator etc) is 2.970 kg 6.5 lbs so pretty lightweight. It's now spitting out Bisley Magnums at just under 12 ft lbs. (SimonCHere - thanks! With the earlier setting it was pushing BisMags out at nearly 13 ftlbs!!) I haven't got a full shot count yet, but I'm guessing 60 or so from the early chrono testing (fully regulated don't forget
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I find the trigger fine - I might fettle it a bit. The eagle eyed among you may notice I haven't replaced the barrel band - I will do once I've stripped it to cure the leak.
a few more pictures:
Undo case and:
Remove those bits and foam to reveal:
Any questions, please ask
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