I do not have a spare, but I am willing to take my Lebel apart and measure the tube, retaining pin and piston. I already have closeup photos of these items. Just give me a little time to get the measurements.I thought that it would be a hard part to maybe find. If anyone may have a spare, i will be interested. Would it be possible to replicate the tube by and expirienced machinist? Does anyone have any dimensions?
Any dimensions greatly appreciated. The diagram is about as close as i've come to seeing the dimensions of the part. Thanks again for the photograph and any pics with info you can post.