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Thread: BCG Question
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12 July 2015, 06:02 #16
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12 July 2015, 11:06 #17
The black nitride treatment is actually a two "layer" treatment process. The black you see on the outside is a Iron Oxide coating. That coating provides some lubricity, hardness, and sex appeal. When that wears, the nitrogen diffusion layer is exposed underneath. This layer is actually the important part. It changes the metals molecular structure and penetrates the metal around .0005" deep. It provides increased hardness (70 rockwell, off the top of my head), lower friction coefficient, and lubricity (mainly due to the extremely low friction coefficient).
You would be correct. Its a treatment. The Iron Oxide layer could be considered a coating but it is considerable thinner than phosphate or plating (NiB). One of the biggest advantages about nitride is that you do not need to worry about tolerance stacking. You can machine true to spec and not worry about any dimensional changes once the treatment is performed.Premium AR-15 parts for the customer who demands reliability and quality.
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12 July 2015, 11:35 #18
Fort Worth? You're right up the road from me :) (about 2 hours) LOL
I have studied a bit about how they treat barrels so I have a pretty good idea what you are saying. Now that said how is phosphate done? (I don't have any idea) Do you know how hard phosphate is?
Also what is the underlying rockwell hardness of the metal being used in a standard BCG? I am able to relate somewhat to rockwell numbers because thats what they use to test (good) knives...
I am trying to think it through so that I can understand.
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12 July 2015, 14:09 #19
Phosphate is a coating usually applied by dipping. Phosphoric acid and salt is the agent used. It's actually a form of pickling. Hard to compare Rockwell from one type of treatment to another. Too high of a RW# can indicate embrittlement with phosphates.
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12 July 2015, 14:23 #20
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12 July 2015, 15:37 #21
I use to be a dyed in the wool Phosphate BCG user until I tried the Fathom. Now almost every rifle I own runs one. Excellent products, can't recommend them highly enough.
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12 July 2015, 15:51 #22
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12 July 2015, 16:58 #23
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12 July 2015, 17:03 #24
That looks awesome! As ya'll know I am still relatively new to the AR game so I only have one rifle (as of right now) but based on a few things: 1) wevo has yet to recommend anything 'crap' to me yet. When you have 5, 6, or 7 people on wevo saying 'get this'... odds are it's gonna be awesome. 2) the nitride thing sounds pretty interesting. 3) it looks pretty bad ass.
In the short term I want to have a 'uh oh' kit just in case something goes out I won't be left up a creek until I can fix it. A spare BCG is high on that list because at least based on my logic moving parts, especially ones that are getting hot and getting slammed around might be the first to wear out or break, specifically I mean gas rings and kotter pins and so forth. I might be totally wrong but that's my thinking.
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12 July 2015, 17:14 #25
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12 July 2015, 17:31 #26
Speaking of an 'uh oh' kit, what do all ya'll think I should get? Where should I get them from? I have no idea where to get spare gas rings, kotter pins, or whatever else I might need.
Based on your (collective) knowledge what parts are most prone to wearing out?
I am still probably going to get a spare BCG... I don't want to be out in the field shooting and have a gas ring go out and then just blow the whole day, but I still want to get a little kit of stuff that is prone to wear out or break.
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12 July 2015, 17:33 #27
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12 July 2015, 17:35 #28
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12 July 2015, 17:38 #29
BCG Question
For a logo I really dig the Fathom Spade. It's neck and neck with the Ol iron cross from Noveske. In fact the Fathom Spade is the only "tactical" sticker on my truck. Kinda sad they went with the new logo.. It's still looks good but that Spade peaking out the ejection port looks killer IMHO
I really wanted one, but you couldn't order then directly from Fathom. Not sure if Blacksheep are still offering them nowLast edited by DutyUse; 12 July 2015 at 17:48.
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12 July 2015, 17:47 #30
Rainier Arms doesn't have them on their website. Ideally I would like to get a a couple cotter pins, a couple of sets of spare gas rings, and a couple of spare bolts. Ideally it will be the bolt that matches my carrier (hence why I would prefer to get it from Rainier) but I don't know if that matters or not.
Where can I round up those spare parts (something good and reliable) considering that I might not be able to get them from RA?