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Originally Posted by Anonymous Coward  I might be wrong ( and that's not surprising ), but when the VM was coming out they used steel tanks. |
The VM68 was originally designed for a 7oz aluminium tank "under the barrel". The 10oz aluminiun also fits in there pretty good.
The 7oz and 10oz aluminium were the standard sizes of tanks in the late 80s.
9oz tanks, however, are not standard in width. Thats why some quality for the 2x2 exemption, and some do not. Some are steel, moly, and aluminium.
You can try searching for a 7/10oz tank. They are very common and cheap, and exempt from hydrotesting.
nick