I like this spring..a LOT, if Walther will push LGV spares into the UK I for see this spring being used in many project guns.

Specs are:

236mm long, 3.35mm wire, 20.8mm OD, 14.4mm ID, 3.96mm between coils, 33 coils.

If the rifle you are tuning is optimised this spring will deliver 11fpe in .177 with ease with just 34CC of swept volume and the shot cycle is supreme. Its a soft spring due to the 33 coils but packs a nice punch.

Titan should make a copy of this one