CMT/StagOriginally Posted by Rayrevolver
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CMT/StagOriginally Posted by Rayrevolver
Whats everyone's issue with 9310?
I cant find bad info on it.
In short, it isn't mil spec/to the TDP. The long of it, is that the companies that generally are using it aren't the ones who you think of when you think high quality. While the fact that it isn't to the TDP may not be a huge issue since it can be argued that the 9310 is more durable for the carrier position to some, the fact that many, if not most, though far from all, the companies using it are less than great in their QC department or other rifle specs has most treating it as something to run from.
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Question answered....If you want to build a quality, tier 1 rifle, use a BCM, Daniel Defense, Centurion Arms, Colt, etc., BCG. If you don't care about the hard use capabilities of your rifle, any BCG (rubber city armory, dpms, bushmaster, rra, etc.) will work (at least for a while).
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Spot on. This is the critical point. The material tells you something, but it doesn't tell you everything. If a kit-gun manufacturer known for competing on price and nothing else offered a Carpenter 158 bolt that checked all the bullet points (individually MPI'd, shot peened, HPT'd) I would still consider it suspect.
Likewise, if someone known for building things right (e.g. BCM) offered a 9310 bolt I'd consider taking a look at it if (and only if) they noted that it offered something besides cost cutting.
What it's made of is important, but what keeps getting lost is who made it is just as important. I can wake up Cletus from his latest moonshine binge and ask him to groggily "individually inspect" every Carpenter 158 bolt I whittled out on harbor freight mill with used bits. That doesn't mean what I'm selling is better than a batch-tested S&W bolt made of substitute materials.
Guns, is the NP3 coating on the SIONICS BCG much better than the NiB coating? The research I have looked at is that in theory it should be better. I have not been all that impressed with the NiB coating on my AAC BCG but do see the value when running suppressed and I am hoping the SIONICS BCG would be a step above.
Googled it and it seems interesting. The NP3 is an awesome finish but I wonder if this is more abrasion resistant? i.e. you have to be careful what you clean the NP3 with as a standard bronze/brass brush will remove the finish. Price-wise the link looks to be reasonable and the specs are GTG.
http://www.crypticcoatings.com/coate...carrier-group/
Last edited by ABNAK; 02-22-15 at 21:17.
11C2P '83-'87
Airborne Infantry
2 weeks ago I was involved with a 10,000 round endurance test by a local rifle mfg (NDA prevents me from disclosing their information at this time), and my rifle as well as one other had the Cryptic Coatings BCG's in the Black Mystic/CVD finish. My rifle's test was one shot every two seconds for 90 rounds, let barrel cool down to ambient temp, and then wipe down and re-lube with slip2000 every thousand rounds for 10,000 documented rounds. The other rifle with the Cryptic Coatings BCG was a dry test where all parts were degreased prior to testing, and one shot every two seconds for 90 rounds, cool to ambient, for 2,000 documented rounds.
Here is the BCG from my rifle at the documented 10,000 rounds after a quick blast from gun scrubber and a wipe down. There was almost no wear on the contact points.
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
Here is the BCG from the 2,000 round dry test.
BEFORE
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
AFTER
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
[IMG]Cryptic coatings bcg by jprizz237, on Flickr[/IMG]
Even after 2K rounds caked on most of the carbon literally wiped off with a rag. Now there was more wear marks on the dry test than the 10K lubed test, so even with fancy coatings and treatments lubrication is needed, however the PVD/CVD finish was by far the superior treatment. There was also some NiB bcg's being tested and they showed significantly more wear than the PVD/CVD carries, and clean up was barely improved over the phosphate coated ones. To me NiB is a worthless finish, but the NP3 and PVD/CVD show promise.
Last edited by VIP3R 237; 02-22-15 at 21:55.
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