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Melonite treated bolts / bolt carriers

 
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Old 06-06-2013, 07:45 PM
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Melonite treated bolts / bolt carriers

Has anyone had their bolt / carrier "melonited" (if that is the right term). I was reading about this in the barrels, bullets, etc. forum. Some guys were talking about doing it with their 700's etc., receivers and bolts.

I haven't done this to anything myself yet. However, with what I gathered it doesn't add anything to the overall dimensions of the piece. It takes the hardness of any carbon steel (I believe) up to somewhere above 70 Rockwell, and makes it virtually impervious to corrosion, while improving lubricity.

Those all sound like pretty good attributes for an AR bolt and carrier to me. What do some of you AR builders out there think? Has anyone actually tried this and how did it work?

Thanks
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Old 06-06-2013, 11:08 PM
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Re: Melonite treated bolts / bolt carriers

You are correct on the metal hardness.

Purchased an AR barrel that has had this applied, but have not shot it yet.

Hopefully others will chime in with their experience with melonite.
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Old 06-08-2013, 06:56 AM
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Re: Melonite treated bolts / bolt carriers

Visited with "Adam" at H&M Metal Processing while I was at the NRA convention this spring.
Talked extensively about their process which I understand is slightly different and improved over Melonie (but don't take my word for it, I'm not a chemist or engineer)

Quote:
Originally Posted by H&M Metal Processing
BLACKNITRIDE™, or Ferritic Nitrocarburizing, is the thermochemical that simultaneously diffuses nitrogen and carbon into the surface of ferrous metals.
I was quoted $200 for a minimum fee, but that they could do multiple parts for that price. 4-5 bolts or a couple bolts and a barrel, or a few other AR parts.
I assume the set up costs the money and the tank size is the only restriction.

If you were to do a few parts...it would be VERY worth it. I'm planning to do ALL of my BCGs and all my muzzle breaks and suppressor mounts.
The lubricity of the metal after black nitride is suppose to be such that carbon won't stick to it. That's a big deal when running a suppressor.

H&M Metal Processing
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Old 06-08-2013, 07:58 AM
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Re: Melonite treated bolts / bolt carriers

I really don't see how this is worth the money guys? This article from a very well know trainer represents the real facts about the ar and its performance. I am in no way saying that what you guys are discussing is not an improvement, I just have to wonder will you ever shoot this many rounds?

S.W.A.T. MAGAZINE – FILTHY 14 : Slip 2000 Official Blog
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Old 06-08-2013, 11:46 AM
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Re: Melonite treated bolts / bolt carriers

Quote:
Originally Posted by ICANHITHIMMAN View Post
I really don't see how this is worth the money guys? This article from a very well know trainer represents the real facts about the ar and its performance. I am in no way saying that what you guys are discussing is not an improvement, I just have to wonder will you ever shoot this many rounds?

S.W.A.T. MAGAZINE – FILTHY 14 : Slip 2000 Official Blog
Thanks for the link. I own an AR15, don't shoot it much and don't know much about them, but I think I'll buy some of the lube referenced in this article.

"Third is the fact that we used Slip 2000 EWL which, based on past evaluations, keeps guns running long after other lubes have rolled craps."
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Old 06-08-2013, 05:42 PM
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Re: Melonite treated bolts / bolt carriers

Thanks for the input guys, the H&M Metal processing is exactly what I was refering to. (I know I said "melonite" but I couldn't remember nitrocarberwhoozit off the top of my head.)

I think that you are right in saying that for basically everyone it's not necessary. I have talked to multiple guys that put there guns through some torture tests while "working" in the sand box. And all of them have said that the design the way it is, is completely adequate.

However, my personal thoughts have always been, if you're going to build something build it to the absolute limit! (That doesn't mean put a bunch of fancy gizmos on it.)

Anyone esle have any input?
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Old 06-10-2013, 01:20 AM
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Re: Melonite treated bolts / bolt carriers

For a standard AR, I don't really see the need...but I can tell you that running suppressed is not the same.
I've had my bolt and trigger group get so sticky with carbon that its noticeably more difficult to chamber a round and my trigger pull has virtually doubled.

I've used two different kinds of CLP on the bolt and trigger group and it helps A LOT, but for $50 or less (to do 4 different bolts and numerous QD suppressor mounts) I believe it would be worth it for me.
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