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Posted: 4/23/2020 6:35:31 PM EDT
[#1]
I do not know when the change happened, but my BRN-180 has the nickle bolt. All 3 I've had came with the nickel bolt. They were pretty early in production though.
https://youtu.be/TvWm877o2U8?t=163 Shows the bolt head. My latest BRN180 is a 0719 prefix serial number |
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Posted: 4/23/2020 8:08:08 PM EDT
[#2]
Mine has the nickle coated bolt.
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Posted: 4/24/2020 9:55:31 AM EDT
[#3]
The mine was black matte too, as was the replacement. I was expecting the nickel bolt too.
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Posted: 4/24/2020 10:33:45 AM EDT
[#4]
This is what I received as an answer following up with the techs involved in this project:
"We had to move away from nickel teflon because the plater was not getting consistent results, leading to a lot of rejects." Thanks for bringing it to our attention so we could make sure all of our tech specs were up to date. Please share pics of how you set yours up, since I'm looking for inspiration for when I finally get one! |
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Posted: 9/6/2020 9:36:17 AM EDT
[#5]
So why couldn't they have gone with nitride? Black oxide is a cheap finish that isn't durable at all. I still love my brn180s, but for the price, come on...
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Posted: 9/6/2020 10:53:31 AM EDT
[#6]
I'm almost certain it's not black oxide. If it was, you could probably get a pick to remove the finish. If it is black oxide, they fucked up. Literally the only company in history to black oxide a bolt.
I think it's black nitride and the website is wrong. I would ask Brownells to clarify. |
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Posted: 9/15/2020 4:47:03 PM EDT
[#7]
The BRN-180 Bolts are Black Oxide. This is the same finish that PWS (mfg of the BRN-180) applies to their bolts.
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Posted: 9/16/2020 12:18:14 AM EDT
[#8]
Maybe PWS uses black oxide in their budget line, but the brn180 upper by itself is now 850. I'm almost certain a regular pws gun will be qpq as evidenced by this https://palmettostatearmory.com/pws-direct-impingement-bolt-carrier-ar15-m4-pattern-rifles-1dibcra1.html
Hopefully brownells can give the consumer a better finish than a cheap black oxide in the future. |
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Posted: 9/16/2020 5:01:01 PM EDT
[#9]
    
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Posted: 9/19/2020 4:14:17 PM EDT
[#10]
Quote HistoryQuoted: The BRN-180 Bolts are Black Oxide. This is the same finish that PWS (mfg of the BRN-180) applies to their bolts. @brownells What coating is the carrier? It's interesting because I have a PWS MK116 Mod 2 upper that's FNC Lifecoat (nickel/nitride) |
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Posted: 9/21/2020 3:34:14 PM EDT
[#11]
Quote HistoryQuoted: @brownells What coating is the carrier? It's interesting because I have a PWS MK116 Mod 2 upper that's FNC Lifecoat (nickel/nitride) The carrier is black oxide. It was determined (by PWS) that nitriding would inadvertently effect the heat treat of the carrier. This is particularly important given the thin area below the cam pin. If not heat treated properly, that area would not hold up, especially if made brittle by nitriding. |
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Posted: 9/21/2020 6:04:56 PM EDT
[#12]
Quote HistoryQuoted: The carrier is black oxide. It was determined (by PWS) that nitriding would inadvertently effect the heat treat of the carrier. This is particularly important given the thin area below the cam pin. If not heat treated properly, that area would not hold up, especially if made brittle by nitriding. @Brownells Thanks for the heads up. Any ideas why it wasn't just sent to be DLC'd or Chromed after heat treat to still increase strength , corrosion resistance, and lubricity, but remove the possibility of brittleness? |
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Posted: 9/22/2020 8:34:46 AM EDT
[#13]
Quote HistoryQuoted: @Brownells Thanks for the heads up. Any ideas why it wasn't just sent to be DLC'd or Chromed after heat treat to still increase strength , corrosion resistance, and lubricity, but remove the possibility of brittleness? Those finishes do not seem necessary on this platform outside of cosmetic reasons, plus those all add cost to the finished assembly. |
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Posted: 9/22/2020 8:45:57 AM EDT
[#14]
Why not phosphate?
It’s common and superior to black oxide. |
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Posted: 9/23/2020 9:52:13 PM EDT
[#15]
This is good to know. Thank you for sharing that.
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Posted: 9/23/2020 9:57:20 PM EDT
[#16]
Maybe you can pass this on, but some sort of better coating other than black oxide would be appreciated. I'm not sure what sig used on my 556R gen 2, maybe some sort of dlc, or np3. It has held up fantastic. At a 500-600 dollar price point for the upper I would give the black oxide a pass. At 800-850 it's kind of point of contention. I'm shooting my brn180 gen 2 upper for the first time this weekend. If this upper shoots under a minute than please disregard the request for a better finish. Thanks again for your participation in this thread.
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Posted: 9/28/2020 9:43:37 PM EDT
[#17]
I was able to get two 5 shot groups about .8 at 100 yards with nothing special 55gr 223. I'm glad these brn180's have quality barrels. I look forward to using some of my match ammo in the brn180 on the next range visit. I guess the black oxide doesn't bother me as much anymore.
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Posted: 9/28/2020 11:52:50 PM EDT
[#18]
Quote HistoryQuoted: @Brownells Thanks for the heads up. Any ideas why it wasn't just sent to be DLC'd or Chromed after heat treat to still increase strength , corrosion resistance, and lubricity, but remove the possibility of brittleness? Quote HistoryQuoted: Quoted: The carrier is black oxide. It was determined (by PWS) that nitriding would inadvertently effect the heat treat of the carrier. This is particularly important given the thin area below the cam pin. If not heat treated properly, that area would not hold up, especially if made brittle by nitriding. @Brownells Thanks for the heads up. Any ideas why it wasn't just sent to be DLC'd or Chromed after heat treat to still increase strength , corrosion resistance, and lubricity, but remove the possibility of brittleness? Hard chrome does not do you any favors when it comes to fatigue life of highly stressed components. There is also the risk of hydrogen embrittlement, so it must be baked shortly after plating in order to drive nascent hydrogen out of the part. |
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Posted: 10/8/2020 1:04:08 PM EDT
[#19]
What kind of bolt life can we expect from these?
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Posted: 10/8/2020 1:10:04 PM EDT
[#20]
What kind of bolt life can we expect on the BRN-180?
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Posted: 10/8/2020 3:31:59 PM EDT
[#21]
10-15,000 rounds with the BRN-180 bolt, similar to an AR-15.
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Posted: 10/8/2020 3:35:00 PM EDT
[#22]
I just backordered a 10.5, is their any spare parts I should stock up on? Also, what kind of wait times should I expect?
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Posted: 10/8/2020 7:45:52 PM EDT
[#23]
Quote HistoryQuoted: I just backordered a 10.5, is their any spare parts I should stock up on? Also, what kind of wait times should I expect? Bolt. It uses a milspec firing pin. |
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Posted: 10/9/2020 9:03:33 PM EDT
[#24]
The upper I just got earlier this year has a Nickel bolt. I was actually expecting a black one after reading this. Finish is holding up fine.
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Posted: 10/9/2020 11:39:38 PM EDT
[#25]
Quote HistoryQuoted: 10-15,000 rounds with the BRN-180 bolt, similar to an AR-15. Brownells, how do I get an extra bolt? |
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Posted: 10/10/2020 11:46:15 AM EDT
[#26]
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Posted: 10/10/2020 2:07:28 PM EDT
[#27]
Quote History@brownells I'm so confused. You guys said the bolt is Black Oxide but the website says your bolt is Black Nitride. Can you clarify? |
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Posted: 10/12/2020 9:01:54 AM EDT
[#28]
Sorry about that, the web finish was listed incorrectly, we will get that revised. It is black oxide.
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Posted: 10/12/2020 10:38:14 PM EDT
[#29]
I'm back ordering one today. What kind of time frame do you think it might be on the 10.5 5.56 before shipment?
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Posted: 10/12/2020 10:47:12 PM EDT
[#30]
I spend thousands with you guys every year and I frikkin' love those 'Brownelled' memes. If ya'll were smart, you would take that ball and run with it, make your media department own it.
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