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pre64 m70 receiver finish
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Can the rough grey finish be replicated with reasonable cost and "everyday" bluing materials available???



Perry
 
Posts: 2249 | Location: South Texas | Registered: 01 November 2005Reply With Quote
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Yes but it takes a good man to get the color right. The original receivers were listed as sand blasted. I have friends who use a coarse bead blast to replicate. Sadly most are gone or done gunsmithing.


PA Bear Hunter, NRA Benefactor
 
Posts: 1618 | Location: Potter County, Pennsylvania | Registered: 22 June 2005Reply With Quote
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I blast them with black beauty and hot blue them; they are darker than the original gray. If you want gray, then zinc phosphate them.
 
Posts: 17269 | Location: USA | Registered: 02 August 2009Reply With Quote
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With the zinc phoshate do you still bead blast with a coarse media?
 
Posts: 2249 | Location: South Texas | Registered: 01 November 2005Reply With Quote
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I actually have one we did with coarse sand and rust blue. It turned out great but is more black than grey.
 
Posts: 2249 | Location: South Texas | Registered: 01 November 2005Reply With Quote
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Yes, you blast with coarse media; not bead blasting; that is blasting with glass beads. Different thing; the beads do not leave a rough enough finish. It's a very gentle process. All phosphating works best with medium or coarse blasting. And you can do it yourself; get the chemicals from Brownells.
 
Posts: 17269 | Location: USA | Registered: 02 August 2009Reply With Quote
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thanks guys!!!
 
Posts: 2249 | Location: South Texas | Registered: 01 November 2005Reply With Quote
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