Just made a visit to agrtuning and happened to see a gas ram from Vortek that he has been sent to evaluate. I have always been impressed with the quality of Vortek standard airgun springs and this "pneumatic piston" gives the same impression. It is supplied with a fill adapter that screws into the centre of the piston seal and can be pumped with a standard foot pump to required pressure. This one has been tested to 9 ft.lb. which is really a maximum you want for the little HW30.
These gas ram pneumatic pistons are not available yet in UK, but will be coming on stream together with others for the Weihrauch range.

Baz

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