View Full Version : Thoughts on Cryptic Coatings/Toolcraft BCG
Hey all. Long time lurker, seldom poster.
Always been a standard phosphate BCG guy, love my BCM's. Came across the cryptic coatings BCG which is a Toolcraft with PVD/CVD coating a year or so ago, I'm sure most of you have run across it in your web travels. Anyways, the magic stuff usually doesn't appeal to me. However, this BCG beginning as a Toolcraft and the claims on added durability/slickness have me wanting more info. I figured a year ish into their production, if it was really that good, that shooters would be talking more about it. Other than a TTAG review, and another post on WeaponEvolution there isn't much out there.
Anyone given one a try or have an opinion?
This isn't a general "coated BCG" thread (of which most are wasted money). I'd just like to know more about, or discuss this specific BCG.
I probably have more rounds through the Black Mystic than anyone on the forum. I have over 25k through one and I am a believer. It just works. I have never had a coating/treatment live up to the hype like the Cryptic BCG. Carbon scrapes off with your fingernail, there is little wear especially when considering the amount of rounds fired.
I'll post up a better review and pictures up tomorrow.
I have one of the Mystic Silver bolts, all the mil-spec bases being covered. It is currently a spare so I can't vouch for it's durability or ease of cleaning. Sure looks purty though!
Just looked at Cryptic Coatings website and it doesn't look like they sell the coated bolts by themselves now (bought mine earlier this year). They do sell one that looks to be phosphated though.
The coating is akin to the gold-colored coating put on drills to keep them sharp longer.
Although, I would like to know how a coating on the bolt and bolt carrier is going to: "lower operating temperatures"....The temperatures the BCG are going to be governed mostly by the gas temperature. Cycle the bolt by hand a few times, how hot does it get? Friction generated heat is pretty negligible.
They do sell one that looks to be phosphated though.
It is just mil-spec phosphate coated, and priced accordingly.
plouffedaddy
11-02-15, 07:39
The coating is akin to the gold-colored coating put on drills to keep them sharp longer.
Although, I would like to know how a coating on the bolt and bolt carrier is going to: "lower operating temperatures"....The temperatures the BCG are going to be governed mostly by the gas temperature. Cycle the bolt by hand a few times, how hot does it get? Friction generated heat is pretty negligible.
Just by decreasing friction. If I get a minute later I'll pull up a video that demonstrates this with thermal and NiB and chrome vs. phosphate. It's pretty minimal but it is there.
Thanks for chiming in all. Viper, I had seen your posts on weapon evolution, would definitely like to see what you have as far as testing.
I'm not interested in bling, just effectiveness. I take that to mean that the only BCG from them with a PVD/CVD coating worth the premium would be the Mystic Black.
Just by decreasing friction. If I get a minute later I'll pull up a video that demonstrates this with thermal and NiB and chrome vs. phosphate. It's pretty minimal but it is there.
The places where the friction is the highest are chrome plated just like the phosphate ones....
plouffedaddy
11-03-15, 05:59
The places where the friction is the highest are chrome plated just like the phosphate ones....
Tracking. But the outside contacts the upper, lugs the chamber, etc... But like I said,
It's pretty minimal but it is there.
I haver roughly 1000 rounds with my mystic black version, very slick!!! Super easy to clean. That being said I paired it with a jp enterprises silent spring and had multiple double feeds. Switched back to a standard spring with no further issues....maybe just a bad combination. Love the bolt though
I know that I'm playing into a revival of old thread but the information in this post is worth noting.
It might be something to do with how surface roughness affects heat dissipation. Like for some use surface is roughed to increase surface area to dissipate heat. Opposited to some use where surface that is smoothed show to stay cooler for example this YouTube video I watched awhile ago about cast iron cookware getting smoothed and one section polished leaving three different surface texture in one pan. The large temperature difference between surface variation is most memorable to me. How smoother surface stay substantially cooler.
Skip to 6:59 mark
https://youtu.be/rNrBGi63FFo
Also watch 7:55 mark where egg white are cooked on those surface the rough surface egg seem darker but there is too much variable like the delay where he pour egg white onto rough surface first then flip it first. Plus how the first pour would take away heat from second and third pour.
I know many overclockers sand and polish their cpu heat plate to be perfectly flat for better contact with heatsink and gained substantial performance gain. Would this apply to transferring heat to open air? I dont know. I point out how increasing surface area principle conflict with "smooth dissipate better" like how barrel are finned to increase surface area and in fact cool faster.
Perhaps the surface of cryptic BCG migh lt be just more conductive like how copper > steel for example copper base cookware is used so copper spread heat better across the pan like if coating spread heat from the piston chamber area of BCG to carrier tail area so more heat can be disspated across bigger surface.
Perhaps thermal engineer's input would be more enlightening.
If plain old parkerizing is good enough for Colt, it's good enough for me.
If plain old parkerizing is good enough for Colt, it's good enough for me.
Yeah, I've come to the same conclusion for the most part except I really like the one Mystic Black finished BCG that I have. I also have 3 phosphated BCGs from Cryptic Coatings and they are the nicest looking phosphated BCGs that I've ever seen... At least comparing them to Colt's, LMT's and a Young Manufacturing M16 SP1 stripped carrier I just got.
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