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· Banned
142 Posts
Discussion Starter · #1 ·
I have access to a metallurgy facility that can do heat treat and cryo-treat.

I have 3 unmarked bolts- presumably Polytech/Norinco- and one coming.

Only one checks out lower than 50 HRW on the gauges at the facility.

I can get the bolts re-heat treated, nitrided, or cryogenic dip.

Which would you do ?

· Forum Jester
9,628 Posts
it's too close to your face to play games with.
the made in china info should have been enough of an indicator
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