Although I ordered a Mk 2 spring - it was the same length as the V-Mach that I had fitted some time ago.
No Piston weight...
Cheers
Steve
Count number of coils, can be same length and wire size but if more coils it'll not be able to compress as much (or if same number of coils but thicker wire)
AA TX200 MK2 .177, MK3 Barrel, long stroked & shortened T/P
AA TX200 MK3 HC .177, 22mm internals, shortened T/P http://www.anstonftc.co.uk/