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Old 08-13-2013, 5:18 PM
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Gunsmith Dan Gunsmith Dan is offline
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Yes Glock slides are milled from soild block of mild steel and require surface hardening (case or nitride) so they do not gall and wear out to fast (and why they are so low cost).

You can alway use other materials just make sure that the slide is not too heavy compared to a original or you will need to change out other parts (recoil spring for one). If you make the slide alot heavier than the original you will not only wear out the frame faster BUT you can stress out the frame to the point it will fail over time.
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