WANTED COUPLE OF PIECES OF VERY RIGID RUBBER TUBE 16mm ID

[blueeyes]

Hi Guys need your help , I am going to try and adapt a set of shooting sticks and need a couple of pieces of really stiff tubing 16mm ID the stiffer the better but not solid rigid if you know what I mean , outside Diameter up to 24mm any ideas most welcome thanks Ps only need two pieces about 4" each

[wall90]

i have some flexible plumbing pipe that i have removed from my house,the outside diameter is 20mm and internal is about 15mm ish, it is white plastic with an aluminium layer in it and then another plastic layer inside,it is flexible but the aluminium makes it stiff and will hold its shape if bent. apparently it is a German design and was/is used in underfloor heating. if you think its any good i can post it.

[blueeyes]

i have some flexible plumbing pipe that i have removed from my house,the outside diameter is 20mm and internal is about 15mm ish, it is white plastic with an aluminium layer in it and then another plastic layer inside,it is flexible but the aluminium makes it stiff and will hold its shape if bent. apparently it is a German design and was/is used in underfloor heating. if you think its any good i can post it.

Thanks bud but it has to have a bit of give I have a set of Swagger sticks that pivot on to springs to allow movement without moving the sticks however as I sit and have the rifle rested on my lap as I am scanning , the rifle is top heavy and the springs cant hold it the result is the rifle twisting and falling , I have tried layers of shrink tube but still too soft see pic