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Cyrano Inner Barrels replacements

popgun pete

Well-Known Member
Jul 30, 2008
3,377
744
153
Australia
Some time ago someone here was looking for an inner barrel. Here are 970 and 1100 inner barrels that are out of new guns. The same site is selling Cyrano tanks that are also from dismantled new guns. Possibly someone is undertaking a project to change guns to stainless steel inner barrels and titanium tanks for river and lake use where guns operate in turbid water full of grit.



The tanks in a wider range of sizes are here. Remember that the long snouts on the original Cyrano guns mean slighter shorter tanks.

 
OP
OP
popgun pete

popgun pete

Well-Known Member
Jul 30, 2008
3,377
744
153
Australia
The same seller is offering these Cyrano trigger parts which are the 1.5 mm trigger transmission pin, the "top hat" guide for the 1.5 mm diameter pin and the threaded bush that fastens this assembly into the plastic rear handgrip. The original Cyrano was offered in an "Apnea System" version with the 1.5 mm pin and a standard version with the thicker Mares transmission pin, but at a certain point in their production all Cyrano guns were released with the 1.5 mm pin and that pin size has since been installed in their other pneumatic gun models. The "top hat" spacer keeps the slimmer pin from being bent by supporting the pin except for the small section protruding above it and pushing on the bottom rear of the sear lever. It protects the pin during normal use, but not against turning the inner barrel in the gun or pulling it out without removing the pin first as otherwise you will bend the pin.
Apnea System 1.5 mm dia pin guide.jpg
trigger transmission pin 1.5 mm.jpg
piston bushing trigger transmission pin.jpg
 
Last edited:

DuncM

Member
Jul 13, 2014
56
11
23
30
Scotland
Hi Pete, that may have been me who was looking for the inner barrel. I bought one from an Italian site called https://neossub.it/
Still haven't got round to replacing it yet, last time I dismantled the gun I couldn't unscrew the transfer valve.
There is an Italian on facebook called Duccio Lippolis who supplies and fits 12mm stainless steel barrels for the Cyrano.
 
OP
OP
popgun pete

popgun pete

Well-Known Member
Jul 30, 2008
3,377
744
153
Australia
Stainless steel inner barrels need to be turned down along their length where there are no screw threads in order to reduce the wall thickness of the inner barrel so that the revamped gun is not too heavy. Alloy barrels work fine in normal underwater conditions, but any suspended grit in the water can enter the barrel and wear it out over time as it cuts into the hard anodized surface. Diving in rivers and lakes with current can whip stuff up from the bottom which we don't often encounter in the ocean except in the wave breaking zone.
 
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