15cm of adjustment - so perhaps they could make a 75-90cm gun for the UK market? 70-100cm would perhaps be even more exciting as it would give many spearos a chance to try lengths they have not used before under extreme conditions, which are not unusual. I guess carrying spears to fit is the issue - but Omer use 5cm less overlap than normal on the XXV, which suggests 1 spear could fit say 70 & 75cm barrel lengths. Travel speargun is good marketing approach - like travel fishing rods.... the adjustable length/extensible speargun can be used as a 95, 100, 105 and 110....