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Posted: 2/24/2019 10:09:51 PM EDT
[#1]
Quote HistoryQuoted:
@coregon I think you said yo have run the 6.75" barrel with the MI extended hand guard? Is the gas block in the same place on the 5.5" Rattler barrel, and the 6.75" barrel? In other words, with the 6.75/MI Rattler extended hand guard, will the gas adjustment line up with the cutout in the hand guard? TIA. |
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Posted: 2/24/2019 10:23:49 PM EDT
[#2]
Quote HistoryQuoted: No the gas block is not in the same place. However, MI makes a rattler rail that lines up w the 6.75" barrel. |
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Posted: 2/26/2019 11:16:57 AM EDT
[#3]
Quote HistoryQuoted: So I guess that was my question. Will the 6.75" barrel/MI 10" Rattler suppressor computable hand guard combo work? |
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Posted: 2/26/2019 11:50:27 AM EDT
[#4]
Anyone else have a hard time with the star screws on the bottom of their hand guard? Stripped both of mine and need to drill them out and get replacements. Way over torqued or too much thread locker.
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Posted: 2/26/2019 11:56:51 AM EDT
[#5]
Quote HistoryQuoted:
Anyone else have a hard time with the star screws on the bottom of their hand guard? Stripped both of mine and need to drill them out and get replacements. Way over torqued or too much thread locker. |
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Posted: 2/26/2019 12:12:33 PM EDT
[#6]
Quote HistoryQuoted:
Anyone else have a hard time with the star screws on the bottom of their hand guard? Stripped both of mine and need to drill them out and get replacements. Way over torqued or too much thread locker. ETA: Thanks to @coregon for the quick assist. I’m all good now. |
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Posted: 2/26/2019 2:01:43 PM EDT
[#7]
Quote HistoryQuoted:
To clarify, there’s no normal/maintenance reason to remove these screws. I’m getting the Rattler color anondized in DD MK18 FDE. ETA: Thanks to @coregon for the quick assist. I’m all good now. Quote HistoryQuoted:
Quoted:
Anyone else have a hard time with the star screws on the bottom of their hand guard? Stripped both of mine and need to drill them out and get replacements. Way over torqued or too much thread locker. ETA: Thanks to @coregon for the quick assist. I’m all good now. 
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Posted: 3/1/2019 9:29:41 PM EDT
[#8]
I think mine is done.
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Posted: 3/2/2019 5:18:16 AM EDT
[#9]
Does anyone here know when those .556 Rattlers will be available on the market? Also what was or is Sig thinking by doing a .556 with the same barrel length as the original 300BLK Rattler? Does Sig have some kind of new .556 round for it? I'm looking into an original 300BLK Rattler but like the aesthetic appeal of the .556 one more given the longer hand guard. Not sure if I should wait for the .556 variant or just move forward and get me the original 300BLK version.
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Posted: 3/4/2019 3:58:46 AM EDT
[#10]
Quote HistoryQuoted:
Does anyone here know when those .556 Rattlers will be available on the market? Also what was or is Sig thinking by doing a .556 with the same barrel length as the original 300BLK Rattler? Does Sig have some kind of new .556 round for it? I'm looking into an original 300BLK Rattler but like the aesthetic appeal of the .556 one more given the longer hand guard. Not sure if I should wait for the .556 variant or just move forward and get me the original 300BLK version. |
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Posted: 3/4/2019 11:02:44 AM EDT
[#11]
Quote HistoryQuoted:
Out of a 5.5" barrel, 5.56 will be super anemic. .300BLK is really better for any barrel length under 7.5" |
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Posted: 3/4/2019 11:10:19 AM EDT
[#12]
Quote HistoryQuoted:
Yeah this is why I can't understand the purpose of the 5.56 model unless I'm missing something about it? Quote HistoryQuoted:
Quoted:
Out of a 5.5" barrel, 5.56 will be super anemic. .300BLK is really better for any barrel length under 7.5" That said, since the Rattler was announced, people have been asking when the 5.56 model would come out. |
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Posted: 3/4/2019 11:32:20 AM EDT
[#13]
I wouldn't mind having a 5.56 Rattler upper just because
 Will those be available?
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Posted: 3/4/2019 11:59:42 AM EDT
[#14]
Quote HistoryQuoted:
I wouldn't mind having a 5.56 Rattler upper just because Will those be available? |
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Posted: 3/4/2019 8:14:18 PM EDT
[#15]
I'm wanting on of those 5.56 barrels. |
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Posted: 3/4/2019 10:45:52 PM EDT
[#16]
Quote HistoryQuoted:
https://www.AR15.Com/media/mediaFiles/58648/20190304_185710-866466.jpg I'm wanting on of those 5.56 barrels. |
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Posted: 3/21/2019 9:21:14 PM EDT
[#17]
https://www.thefirearmblog.com/blog/2019/03/21/sig-sauer-ammunition/
AMMO TYPE: JHP CALIBER: 300 Blk GRAIN WEIGHT: 120 gr MUZZLE VELOCITY: 1897 fps MUZZLE ENERGY: 959 ft-lb QTY PER PACKAGE: 20 MSRP: $30.95 This supersonic duty round is engineered for reliable, controlled, 1.8x expansion, and superior feeding out of rifles with sub-9-inch barrels. The supersonic SBR Elite Copper Duty ammunition features an all-copper bullet and black oxide shell case to visually denote SBR capability. Velocity is 1,897 fps with muzzle energy of 959 ft-lbs out of a 6 ¾-inch barrel. |
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Posted: 3/21/2019 10:18:13 PM EDT
[#18]
@Coregon
Have you shot the 6.75" barrel with Omega 9K? Is it noticeably quieter than the 5.5"? Hearing safe? I saw on 8" 9K yields 135db so figure 7" not too far off |
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Posted: 3/21/2019 10:24:02 PM EDT
[#19]
Quote HistoryQuoted:
@Coregon Have you shot the 6.75" barrel with Omega 9K? Is it noticeably quieter than the 5.5"? Hearing safe? I saw on 8" 9K yields 135db so figure 7" not too far off The Rattler has a completely different tone with most cans, so it's hard to even consider it "apples to apples". |
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Posted: 3/21/2019 11:21:59 PM EDT
[#20]
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Posted: 3/22/2019 1:34:31 PM EDT
[#21]
Broke down and ordered a rattler conversion kit. UAMCX-5B-300-BLK-TAP. I understand that Sig's official stance is that it will only work with the trigger provided, but user results may vary with some guys having partial or no function with a mil-spec trigger and some guys having perfect function. Ideally, I would swap this upper in and out with regular DI mil spec uppers. I currently run Geissele SSF or SSA triggers across the board so I will check function when it gets here, but if I do have to swap to Sig's "match duo" trigger they provide, how will that play with a regular DI upper, if at all?
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Posted: 3/22/2019 9:05:15 PM EDT
[#22]
The Geissele triggers have a problem with breaking in MCX rifles and Geissele won’t warranted them.
Also I could see the 5.56 barrel being useful for agencies that want to shoot 300BLK out operationally but have a larger training allotment of 5.56ammo. |
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Posted: 3/22/2019 9:26:02 PM EDT
[#23]
Quote HistoryQuoted:
The Geissele triggers have a problem with breaking in MCX rifles and Geissele won’t warranted them. Also I could see the 5.56 barrel being useful for agencies that want to shoot 300BLK out operationally but have a larger training allotment of 5.56ammo. |
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Posted: 3/22/2019 9:52:48 PM EDT
[#24]
Geissele's MCX trigger is fantastic.
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Posted: 3/22/2019 10:32:36 PM EDT
[#25]
Quote HistoryQuoted:
Geissele's MCX trigger is fantastic. Just went over 7 months waiting on my SIG can for the Rattler. Hopefully ATF gets caught up one of these days. 
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Posted: 3/23/2019 2:50:04 AM EDT
[#26]
Quote HistoryQuoted:
https://www.thefirearmblog.com/blog/2019/03/21/sig-sauer-ammunition/ https://www.AR15.Com/media/mediaFiles/83570/89FF6EA1-4DBD-405D-BBB5-E3E170EA18AA-885829.jpg AMMO TYPE: JHP CALIBER: 300 Blk GRAIN WEIGHT: 120 gr MUZZLE VELOCITY: 1897 fps MUZZLE ENERGY: 959 ft-lb QTY PER PACKAGE: 20 MSRP: $30.95 Quote HistoryQuoted:
https://www.thefirearmblog.com/blog/2019/03/21/sig-sauer-ammunition/ https://www.AR15.Com/media/mediaFiles/83570/89FF6EA1-4DBD-405D-BBB5-E3E170EA18AA-885829.jpg AMMO TYPE: JHP CALIBER: 300 Blk GRAIN WEIGHT: 120 gr MUZZLE VELOCITY: 1897 fps MUZZLE ENERGY: 959 ft-lb QTY PER PACKAGE: 20 MSRP: $30.95 This supersonic duty round is engineered for reliable, controlled, 1.8x expansion, and superior feeding out of rifles with sub-9-inch barrels. The supersonic SBR Elite Copper Duty ammunition features an all-copper bullet and black oxide shell case to visually denote SBR capability. Velocity is 1,897 fps with muzzle energy of 959 ft-lbs out of a 6 ¾-inch barrel. |
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Posted: 3/23/2019 8:21:10 AM EDT
[#27]
Quote HistoryQuoted:
Velocity tested from a 6.75" barrel? Pretty significant difference between a 5.5" and 6.75" barrel. The 6.75" barrel has 33% more bore length. I wonder if Coregon can snap a photo of the 6.76" barrel with the longer 5.56 handguard? I think a lot of people would like that configuration as you still have a 18" folded PDW, since it suppresses better and benefits from a huge velocity gain. |
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Posted: 3/23/2019 11:34:52 AM EDT
[#28]
Quote HistoryQuoted:
Yeah, the 5.5" should yield ~750 ft lbs energy I wonder if Coregon can snap a photo of the 6.76" barrel with the longer 5.56 handguard? I think a lot of people would like that configuration as you still have a 18" folded PDW, since it suppresses better and benefits from a huge velocity gain. Quote HistoryQuoted:
Quoted:
Velocity tested from a 6.75" barrel? Pretty significant difference between a 5.5" and 6.75" barrel. The 6.75" barrel has 33% more bore length. I wonder if Coregon can snap a photo of the 6.76" barrel with the longer 5.56 handguard? I think a lot of people would like that configuration as you still have a 18" folded PDW, since it suppresses better and benefits from a huge velocity gain. |
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Posted: 3/23/2019 11:54:34 AM EDT
[#29]
Quote HistoryQuoted:
This is the EXACT setup I'm pushing for is the 6.75in barrel in the new 5.56 Rattler given it has that longer handguard. I think it'd be PERFECT setup! I had mentioned this to him in another thread I created. I too would love to see a pic of that 5.56 Rattler with the 6.75in barrel in it. Quote HistoryQuoted:
Quoted:
Quoted:
Velocity tested from a 6.75" barrel? Pretty significant difference between a 5.5" and 6.75" barrel. The 6.75" barrel has 33% more bore length. I wonder if Coregon can snap a photo of the 6.76" barrel with the longer 5.56 handguard? I think a lot of people would like that configuration as you still have a 18" folded PDW, since it suppresses better and benefits from a huge velocity gain. |
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Posted: 3/23/2019 12:35:50 PM EDT
[#30]
Quote HistoryQuoted:
The Geissele triggers have a problem with breaking in MCX rifles and Geissele won’t warranted them. Also I could see the 5.56 barrel being useful for agencies that want to shoot 300BLK out operationally but have a larger training allotment of 5.56ammo. |
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Posted: 3/23/2019 12:47:36 PM EDT
[#31]
Quote HistoryQuoted: Yeah, the 5.5" should yield ~750 ft lbs energy I wonder if Coregon can snap a photo of the 6.76" barrel with the longer 5.56 handguard? I think a lot of people would like that configuration as you still have a 18" folded PDW, since it suppresses better and benefits from a huge velocity gain. |
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Posted: 3/24/2019 12:11:31 PM EDT
[#32]
Duplicate
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Posted: 3/24/2019 12:12:03 PM EDT
[#33]
Quote HistoryQuoted:
Velocity tested from a 6.75" barrel? Pretty significant difference between a 5.5" and 6.75" barrel. The 6.75" barrel has 33% more bore length. https://www.ar15.com/forums/Armory/My-Rattler-Accuracy-and-Chrono-Testing-11-Factory-Loads-/45-498239/ |
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Posted: 3/24/2019 5:56:47 PM EDT
[#34]
Quote HistoryQuoted:
I got an Average of 1935 fps @ 60 degrees from my 5.5" Rattler: https://www.ar15.com/forums/Armory/My-Rattler-Accuracy-and-Chrono-Testing-11-Factory-Loads-/45-498239/ Still even at ~1800FPS 120gr that's about 1.5x the velocity of your 124gr HST +P, flatter trajectory and 1.8x the energy at the muzzle, not to mention magazine capability with gear |
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Posted: 3/24/2019 7:10:54 PM EDT
[#35]
Quote HistoryQuoted: Burdy I think your chronograph may be ~125 fps off. Sig is claiming 1,897 fps for that ammo with 6.75 barrel Still even at ~1800FPS 120gr that's about 1.5x the velocity of your 124gr HST +P, flatter trajectory and 1.8x the energy at the muzzle, not to mention magazine capability with gear |
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Posted: 3/30/2019 11:54:29 PM EDT
[#36]
While I wait on my rattler upper to come in, more questions. Anybody running a dead air wolf on one of these? Wanting to pull the trigger on a can this week.
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Posted: 3/31/2019 1:27:55 PM EDT
[#37]
Quote HistoryQuoted:
While I wait on my rattler upper to come in, more questions. Anybody running a dead air wolf on one of these? Wanting to pull the trigger on a can this week. Dead air makes excellent silencers, but I’m guessing the large internal volume is better geared towards subsonic rounds. |
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Posted: 3/31/2019 2:03:24 PM EDT
[#38]
So what after market trigger is everyone using in there Rattler? Or should I ask what actually works.
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Posted: 3/31/2019 4:10:27 PM EDT
[#39]
Quote HistoryQuoted:
So what after market trigger is everyone using in there Rattler? Or should I ask what actually works. |
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Posted: 4/1/2019 1:08:57 AM EDT
[#40]
@goloud any other suggestions that can pull triple duty on a scorpion, a rattler, and 9mm handgun?
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Posted: 4/1/2019 6:44:05 AM EDT
[#41]
Quote HistoryQuoted:
@goloud any other suggestions that can pull triple duty on a scorpion, a rattler, and 9mm handgun? In general I am not a fan of “do-it-all” type silencers. The Sig SRD762 would make for a great hard use setup for the MCX. The Dead Air Nomad is also a good choice. Then get a separate 9mm can. |
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Posted: 4/4/2019 4:45:14 PM EDT
[#42]
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Posted: 4/5/2019 2:05:01 PM EDT
[#43]
Quote HistoryQuoted:
@Mageever - Todd, how about the Wolf on the Rattler? Dead air makes excellent silencers, but I’m guessing the large internal volume is better geared towards subsonic rounds. Quote HistoryQuoted:
Quoted:
While I wait on my rattler upper to come in, more questions. Anybody running a dead air wolf on one of these? Wanting to pull the trigger on a can this week. Dead air makes excellent silencers, but I’m guessing the large internal volume is better geared towards subsonic rounds. The Wolf will sound great on the Rattler. I've been trying for weeks to get together with a writer for TFB who has one so that we can sound test that combo. I'm very sure some bigger, longer cans like the Sig/Q Trash Chicken will be quieter. But we're talking 9mm vs .308 bore and steel durability vs. mim'd titanium. |
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Posted: 4/5/2019 2:27:14 PM EDT
[#44]
Quote HistoryQuoted: @goloud The Wolf will sound great on the Rattler. I've been trying for weeks to get together with a writer for TFB who has one so that we can sound test that combo. I'm very sure some bigger, longer cans like the Sig/Q Trash Chicken will be quieter. But we're talking 9mm vs .308 bore and steel durability vs. mim'd titanium. Thanks! I know the Nomad sounds great on the Rattler. |
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Posted: 4/5/2019 10:09:27 PM EDT
[#45]
FYI have the SB1913 brace in EE for anyone who wants to replace the rotating brace on their rattler
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Posted: 4/5/2019 10:15:07 PM EDT
[#46]
Love these rattlers. Held one at my local dealer and it felt great. I’ve got a Sandman S and K on the way, but I’m going back and forth between the rattler or a Virtus with a 6.75” barrel. This will be a backpack / truck get home gun. The 5.5” barrel seems optimal but it seems there is a big velocity advantage going to the 6.75” barrel. Would be nice to squeeze out a little more range for the occasional hog or coyote on some of the properties I frequent and will be the rifle I carry on these properties. Any first hand experiences on gas blowback with the Sandman S/K on the rattler? I’d imagine with the K being such a small “work” can it can’t be that bad. For reference my 10.3” AR with SOCOM RC2 was bad at first but I’ve gotten used to it. How do those two compare? Looking for this 300 BLK build to replace my 10.3” 5.56 as my primary rifle.
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Posted: 4/5/2019 10:22:55 PM EDT
[#47]
Quote HistoryQuoted:
Love these rattlers. Held one at my local dealer and it felt great. I’ve got a Sandman S and K on the way, but I’m going back and forth between the rattler or a Virtus with a 6.75” barrel. This will be a backpack / truck get home gun. The 5.5” barrel seems optimal but it seems there is a big velocity advantage going to the 6.75” barrel. Would be nice to squeeze out a little more range for the occasional hog or coyote on some of the properties I frequent and will be the rifle I carry on these properties. Any first hand experiences on gas blowback with the Sandman S/K on the rattler? I’d imagine with the K being such a small “work” can it can’t be that bad. For reference my 10.3” AR with SOCOM RC2 was bad at first but I’ve gotten used to it. How do those two compare? Looking for this 300 BLK build to replace my 10.3” 5.56 as my primary rifle. I’ve not noticed blowback, but I don’t think I’m particularly sensitive to that either, and I’ve always shot it in outdoor settings. I always hear how bad they are, but all I can say is that’s not been my experience. I’d suspect a different can, shooting indoors, or overlubing would all make it worse. |
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Posted: 4/5/2019 10:59:58 PM EDT
[#48]
Quote HistoryQuoted: I’m not particularly noise sensitive, but my Rattler has a Sandman K. I’ve shot it without ear pro in hunting settings and didn’t notice a lot of discomfort. I’d calll it close to an unsuppressed .22 or maybe .22 magnum. This was with supers. Obviously it will be a good bit louder than a longer setup with subs. I don’t mind it, and I have never wished to make it longer for more suppression. I’ve not noticed blowback, but I don’t think I’m particularly sensitive to that either, and I’ve always shot it in outdoor settings. I always hear how bad they are, but all I can say is that’s not been my experience. I’d suspect a different can, shooting indoors, or overlubing would all make it worse. ETA: what is your OAL with Sandman K installed and stock folded? |
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Posted: 4/5/2019 11:50:31 PM EDT
[#49]
Quote HistoryQuoted: Roger. Thanks for the info. Even suppressed anything with supers I wear ear protection. Mainly, given a defense situation, I’d like the K to take out the bite of a supersonic 300 BLK and retain my hearing. The S will be for hunting and fun shooting, whereas the K is for being short as possible while retaining as much hearing as much as possible. Sounds like the K has that covered. ETA: what is your OAL with Sandman K installed and stock folded?  Attached FileNot sure offhand, and I have the old collapsable, but it’d about the shortest game in town short (no pun intended) of a Delta P direct thread. Add about 3” to the above pic. It’d end up at, what, about a 10” overall barrel setup counting the K offhand? You’re not getting much shorter unless you SBR a PS90 (yum) or build a 4.5” 9mm or something. ETA: I recall when the specs were put out for the rifle contract that the Rattler competed for, people here said it was impossible to be done. But here we are. The Maxim PDX or whatever looks like another of the competitors. It also looks downright awesome, and inshallah I’ll have one of those too one day. |
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Posted: 4/6/2019 2:09:43 AM EDT
[#50]
Speaking of the Delta P. This is is an amazingly compact setup that sounded great. [youtube]http://youtu.be/FfMoYenf6_k[/youtube] |
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