Iffy aftermarket alloy Hw100 cylinder, guy drops his rifle off for repair saying its leaking from the filler port when I inspected it it turns out the end of the cylinder is full of hairline fractures how it's not totally failed and injured the guy is beyond me he's a very lucky man, for me the benefits of aftermarket cylinders are not worth the risk.
https://photos.app.goo.gl/fHSDAHaHTp342MW79
Dave.