When I bought my Hakim "Many years AGO",
I bought many hundreds of rounds of Egyptian
8 mm Mau. ammo with it. The ammo the Hakim was
intended to use was relatively mild 198 Gr FMJ.
This ammo was the most corrosive surplus I have
ever seen.
The gas tubes on the Hakim are made of some type
of stainless steel (?) but the block on the barrel that it
"Plugs" into is not. make sure that this area is not damaged
by corrosion. Inspect the inside of the wood forearm for
"Flash Burns" in the area of the Tube to Block connection.
(Sure Sign of a pressure "Blow By Leak"). If there are
ANY signs of burning, DO NOT FIRE IT AGAIN! until a
VERY reputable gunsmith takes a look at it.
If you find that you absolutely have to shoot it, turn the
gas off completely and use it as a "VERY COMPLICATED"
straight pull Bolt Action.
The Hakim (Lungman) is a sound design, but the quality of
workmanship and materials in the Egyptian examples
is not even close to the Swedish Examples.