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Post by USCGME2 on Aug 11, 2012 12:46:46 GMT -7
CWI, I was skimming thru one of my catalogs and saw a bolt carrier group from Black Rain that was made of NP3? It claims to need no oil and is very easy to clean. They are about $299  . Are these worth the expense and do they do what they claim? |
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Post by WILL on Aug 11, 2012 13:41:05 GMT -7
CWI, I was skimming thru one of my catalogs and saw a bolt carrier group from Black Rain that was made of NP3? It claims to need no oil and is very easy to clean. They are about $299 . Are these worth the expense and do they do what they claim? I believe the catalyst for the no-lube movement is all the desert fighting of late. The fine dust/sand sticks to gun oils, jamming weapons. Since the AR-15 is known to run best when "wet" (well oiled), we had a problem. I understand the military is now using a dry lube to alleviate the issue, but several high end AR manufacturers have come up with slick parts coatings as their solution. I own a POF that is alleged to have a lube-free finish on the entire interior of the weapon. While I believe it will run lube free, I also believe it will wear out faster if I do. I just oil it anyway. IMHO, anytime you’re rubbing two pieces of metal together, the more friction reducing agents, the better. |
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Post by Cwi555 on Aug 11, 2012 18:52:24 GMT -7
CWI, I was skimming thru one of my catalogs and saw a bolt carrier group from Black Rain that was made of NP3? It claims to need no oil and is very easy to clean. They are about $299 . Are these worth the expense and do they do what they claim? There are two ways to reduce friction between moving metal parts. 1. You can apply a lubricant that acts as a microfilm between the moving parts that prevents rubbing them directly together. 2. Change the surface polish/qualities of the parts in question so that their surfaces are very smooth. As you can see on the S22 microfinish comparator below, finishes vary greatly. A 2L lapped is very shinny an smooth, vs say a 125 ground surface which is very course and rough. en.wikipedia.org/wiki/Surface_finishWhile wikipedia is often suspect for information, I can verify for you that that page does a good job of explaining it. Bottom line is, the smoother it is, the less friction there is, the less of a need for lubricant. With that said, that is why I take exception to claims of 'one' part being a fix all. No one part can do that as both contacting surfaces must be addressed. Otherwise, while you may have a slick hard surface on one part, the surface in question will prematurely wear out the surface that was not addressed. Buyer beware on such claims.  |
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. Are these worth the expense and do they do what they claim?
