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yeah thats really bad, either you had a strike or those baffles are not to spec, what barrel length are you using it on? if its too short, that may play a role as well. I would hit them up to see what they say.
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Quoted: yeah thats really bad, either you had a strike or those baffles are not to spec, what barrel length are you using it on? if its too short, that may play a role as well. I would hit them up to see what they say. View Quote |
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It definitely looks worse than silencers with similar materials and round counts. Have you noticed any performance differences? Louder? Flashy? POI shift repeatability?
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Quoted: It definitely looks worse than silencers with similar materials and round counts. Have you noticed any performance differences? Louder? Flashy? POI shift repeatability? View Quote ETA: I also check the baffles after every shoot to look for shiny spots that would potentially indicate a strike. Haven't found anything yet. |
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Contact CS and we will rebuild it for you for free. There is enough to suspect to call this a potential mfg defect.
Couple of observations: 1. You have a can that doesn’t have the vent holes on the forward support. I’m not sure whether we will be able to update that or not, that gets more crazy into deconstruction of the can. This revision was a small number of cans around January 2017 time frame like maybe 200-400. 2. Those baffles are not the newer generation flow through, so that doesn’t help. 3. The color doesn’t look right for heat treatment having occurred. 4. I don’t recommend replacing mount screws. Milspec mojo turned in a pre flow through 30SDK at ~50,000rds that looks a lot better than this. His second baffle was not gone. I’ve beat on a lot of these and never achieved anything like this. I would worry about how the A2’s are mounted and try to figure out if those are aligned. This is not normal wear. This would be the worst looking unit I’ve seen in 17 years of business and I have former Marsoc buddies from contracting with 10,000 plus rounds on multiple M4SD-IIs going strong. We sold m4sdk’s to a foreign SF unit in 2016 that has reported zero problems and I saw that buyer at Shot in January and he said they were still happy with the original cans. |
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Quoted: Contact CS and we will rebuild it for you for free. There is enough to suspect to call this a potential mfg defect. Couple of observations: 1. You have a can that doesn't have the vent holes on the forward support. I'm not sure whether we will be able to update that or not, that gets more crazy into deconstruction of the can. This revision was a small number of cans around January 2017 time frame like maybe 200-400. 2. Those baffles are not the newer generation flow through, so that doesn't help. 3. The color doesn't look right for heat treatment having occurred. 4. I don't recommend replacing mount screws. Milspec mojo turned in a pre flow through 30SDK at ~50,000rds that looks a lot better than this. His second baffle was not gone. I've beat on a lot of these and never achieved anything like this. I would worry about how the A2's are mounted and try to figure out if those are aligned. This is not normal wear. This would be the worst looking unit I've seen in 17 years of business and I have former Marsoc buddies from contracting with 10,000 plus rounds on multiple M4SD-IIs going strong. View Quote |
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Use the link here and request an RMA please. Thankyou.
https://www.griffinarmament.com/contact-us/customer-service/ |
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Quoted: Contact CS and we will rebuild it for you for free. There is enough to suspect to call this a potential mfg defect. Couple of observations: 1. You have a can that doesn’t have the vent holes on the forward support. I’m not sure whether we will be able to update that or not, that gets more crazy into deconstruction of the can. This revision was a small number of cans around January 2017 time frame like maybe 200-400. 2. Those baffles are not the newer generation flow through, so that doesn’t help. 3. The color doesn’t look right for heat treatment having occurred. 4. I don’t recommend replacing mount screws. Milspec mojo turned in a pre flow through 30SDK at ~50,000rds that looks a lot better than this. His second baffle was not gone. I’ve beat on a lot of these and never achieved anything like this. I would worry about how the A2’s are mounted and try to figure out if those are aligned. This is not normal wear. This would be the worst looking unit I’ve seen in 17 years of business and I have former Marsoc buddies from contracting with 10,000 plus rounds on multiple M4SD-IIs going strong. We sold m4sdk’s to a foreign SF unit in 2016 that has reported zero problems and I saw that buyer at Shot in January and he said they were still happy with the original cans. View Quote |
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Quoted: Quoted: Contact CS and we will rebuild it for you for free. There is enough to suspect to call this a potential mfg defect. Couple of observations: 1. You have a can that doesn’t have the vent holes on the forward support. I’m not sure whether we will be able to update that or not, that gets more crazy into deconstruction of the can. This revision was a small number of cans around January 2017 time frame like maybe 200-400. 2. Those baffles are not the newer generation flow through, so that doesn’t help. 3. The color doesn’t look right for heat treatment having occurred. 4. I don’t recommend replacing mount screws. Milspec mojo turned in a pre flow through 30SDK at ~50,000rds that looks a lot better than this. His second baffle was not gone. I’ve beat on a lot of these and never achieved anything like this. I would worry about how the A2’s are mounted and try to figure out if those are aligned. This is not normal wear. This would be the worst looking unit I’ve seen in 17 years of business and I have former Marsoc buddies from contracting with 10,000 plus rounds on multiple M4SD-IIs going strong. We sold m4sdk’s to a foreign SF unit in 2016 that has reported zero problems and I saw that buyer at Shot in January and he said they were still happy with the original cans. Bam. That's outstanding CS there. |
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Quoted: Contact CS and we will rebuild it for you for free. There is enough to suspect to call this a potential mfg defect. Couple of observations: 1. You have a can that doesn’t have the vent holes on the forward support. I’m not sure whether we will be able to update that or not, that gets more crazy into deconstruction of the can. This revision was a small number of cans around January 2017 time frame like maybe 200-400. 2. Those baffles are not the newer generation flow through, so that doesn’t help. 3. The color doesn’t look right for heat treatment having occurred. 4. I don’t recommend replacing mount screws. Milspec mojo turned in a pre flow through 30SDK at ~50,000rds that looks a lot better than this. His second baffle was not gone. I’ve beat on a lot of these and never achieved anything like this. I would worry about how the A2’s are mounted and try to figure out if those are aligned. This is not normal wear. This would be the worst looking unit I’ve seen in 17 years of business and I have former Marsoc buddies from contracting with 10,000 plus rounds on multiple M4SD-IIs going strong. We sold m4sdk’s to a foreign SF unit in 2016 that has reported zero problems and I saw that buyer at Shot in January and he said they were still happy with the original cans. View Quote @green0 For point 1, are you referring to the small holes in the pic below? For point 2, the flow through baffles will have four points circled in red just below what I believe are the vents from point 1. Attached File |
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Quoted: 1. You have a can that doesn’t have the vent holes on the forward support. I’m not sure whether we will be able to update that or not, that gets more crazy into deconstruction of the can. This revision was a small number of cans around January 2017 time frame like maybe 200-400. View Quote Hopefully y’all are able to do that to the one I sent in for a baffle upgrade. Something I noticed when I was shooting my M4SDk twice a week on a 11.3” is that the Hammer Comp in the non-vent support ring focuses the blast jet on the bore of the can, whereas the two-port brake was more protective. The A2 also seemed less abusive to the first couple baffles than the Hammer Comp. |
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Quoted: @green0 For point 1, are you referring to the small holes in the pic below? For point 2, the flow through baffles will have four points circled in red just below what I believe are the vents from point 1. https://www.ar15.com/media/mediaFiles/183262/Screen_Shot_2021-04-06_at_7_25_38_PM_png-2726927.JPG View Quote Yes on both points. Those features help, but there hasn’t really been a historical wear problem. We had cans with heavy NFA users who were influencers and received those back at ~10,000 rds after several years of use (for baffle system upgrades) and those have mostly minor first baffle wear. Another data point is an Optimus micro dealer demo unit that had been on a range rental 5.56 M16 that we got back. It has a non ecoflow stack under the same patent baffle as this can, and that unit had first baffle wear only, and the core was maybe 80% filled with lead and carbon from tens of thousands of rounds of 100% full auto use, it was recored and turned around to continue range rental use. I took that can apart myself, and that amount of fouling is impossible to simulate without incredible amounts of use. |
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Quoted: Hopefully y’all are able to do that to the one I sent in for a baffle upgrade. Something I noticed when I was shooting my M4SDk twice a week on a 11.3” is that the Hammer Comp in the non-vent support ring focuses the blast jet on the bore of the can, whereas the two-port brake was more protective. The A2 also seemed less abusive to the first couple baffles than the Hammer Comp. View Quote I will try to see if your can is in house and take a look at wear to see how it looks comparatively. One tool that might help us here is our laser welder, but I blew the diode out welding M240 suppressor prototypes two weeks ago, and we had to ship the unit back to the manufacturer to try to figure out how we can make the unit put down 1000watt welds without hurting itself. I don’t know when they will turn that around. They claimed that was the first field fiber optic laser diode failure they have had, but I believe our laser is twice as powerful as they typically sell, so it represents a small sample size. |
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Quoted: Estimate based on ammo consumption is between 8k and 9k. Mostly an 11.3”, but its also been on a 12.3”, 14.5” 16”, 18”, and a P90. Some full auto, like twice, but nothing too crazy. View Quote I went looking for that, I did recall that number being here in the most recent monthly internal NFA RTR audit that was closed (being in the CS book it was one of the last items open in that audit as the NFA compliance person hadn't audited the CS department vault yet), so with the 320 number familiar in my head, I was hoping it would be here. The CS agent said it shipped Friday. So it's been turned around. I spoke to the machinist who cut the core out of it, and he said the first baffle was worn, but had its full form (AKA no loss of the cone aperture on the opposite side of the first notch), and nothing relevant beyond that. The machinist said it looked like it could have run a lot further. They had already disposed of the core, so it's not around to look at. Sorry the timing overlap was not the greatest there. The upgrade core should be a big improvement to performance and I hope you like it and thankyou for the information. |
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Awesome CS from Griffin! Looking forward to Austin's diagnosis after they receive this can and have a chance to autopsy it.
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Quoted: I went looking for that, I did recall that number being here in the most recent monthly internal NFA RTR audit that was closed (being in the CS book it was one of the last items open in that audit as the NFA compliance person hadn't audited the CS department vault yet), so with the 320 number familiar in my head, I was hoping it would be here. The CS agent said it shipped Friday. So it's been turned around. I spoke to the machinist who cut the core out of it, and he said the first baffle was worn, but had its full form (AKA no loss of the cone aperture on the opposite side of the first notch), and nothing relevant beyond that. The machinist said it looked like it could have run a lot further. They had already disposed of the core, so it's not around to look at. Sorry the timing overlap was not the greatest there. The upgrade core should be a big improvement to performance and I hope you like it and thankyou for the information. View Quote Thanks. Yeah, it could have gone a lot further, especially since I’ve switched to 12.5s, but I wanted to try the new baffle. |
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Well, Got the can in the mail to GA. Im looking forward to getting it in for evaluation and seeing what Griffin has to say. Just hope I get it back before I move next month.
@green0 Is there anyway I could get a cross section of my baffle stack back for display? or is that an NFA no no? |
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Quoted: Well, Got the can in the mail to GA. Im looking forward to getting it in for evaluation and seeing what Griffin has to say. Just hope I get it back before I move next month. @green0 Is there anyway I could get a cross section of my baffle stack back for display? or is that an NFA no no? View Quote The NFA has been weird about that. Dealers reported Silencer Co got in some trouble for cutaways that were not functional suppressors. From the looks of the unit, and the machinist and customer's report of the non-extraordinary condition of the other suppressor from the same production run without issues after 8-9K rounds of mostly short barrel use we just saw in here for service, this can was probably glowing several times or run 1250F+ many times, if it wasn't experiencing a lot of baffle strikes or fragmenting ammunition to make that wear happen. A2's would need to be shim mounted in order to allow the can to be mounted straight. The baffle stack you get back will be heat treated, and laser welded, and should improve the wear properties, but the can won't be able to compensate for abusive use or misalignment of the mounts. When we historically sell ~85,000 cans, thousands of those to current police and former military end users, and some of this same model to happy, elite military unit customers who have been running the cans 6+ years, and are looking at the worst looking core we've ever seen, that isn't insignificant in terms of what it means happened to the unit. Shit happens. We stand behind the product. |
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Quoted: The NFA has been weird about that. Dealers reported Silencer Co got in some trouble for cutaways that were not functional suppressors. From the looks of the unit, and the machinist and customer's report of the non-extraordinary condition of the other suppressor from the same production run without issues after 8-9K rounds of mostly short barrel use we just saw in here for service, this can was probably glowing several times or run 1250F+ many times, if it wasn't experiencing a lot of baffle strikes or fragmenting ammunition to make that wear happen. A2's would need to be shim mounted in order to allow the can to be mounted straight. The baffle stack you get back will be heat treated, and laser welded, and should improve the wear properties, but the can won't be able to compensate for abusive use or misalignment of the mounts. When we historically sell ~85,000 cans, thousands of those to current police and former military end users, and some of this same model to happy, elite military unit customers who have been running the cans 6+ years, and are looking at the worst looking core we've ever seen, that isn't insignificant in terms of what it means happened to the unit. Shit happens. We stand behind the product. View Quote Like I said in my intial post, I dont do mag dumps or anything like that. The closest thing would be a couple bill drills but I dont run bill drills mag after mag after mag. My A2's have always been shimmed with your guys' shim kit and over travel stop. Ive never shot frangible ammo or I would have provided that info in my intial post. Ive only used quality barrels like DD, Criterion, LMT, and Colt and have always checked alignment with the can. I shoot under nods and have never seen the can glow through nods and I dont use a wrap over the can. Nevertheless, I am looking forward to getting it back and continuing to purchase Griffin products. The CS I have received to this point has been excellent. Thank you. |
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Same rifle? Maybe reach out to that manufacturer of ammo that we all may know who it is…I’m sure they’ll help out if it’s who I think it is.
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Quoted: Same rifle? Maybe reach out to that manufacturer of ammo that we all may know who it is I'm sure they'll help out if it's who I think it is. View Quote |
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It's cool to get the rest of the information.
Just because life is shit doesn't mean it has to be shit for you. We'll stay the course on the repair. Make sure you check your rifles on paper for evidence of fragmentation of projectiles before you re-shoot with the can. 55 grain coming apart sounds unusual. It could be related to something else with the firearm. We've never had an issue with fragmenting projectiles here, but bore dimensions or something to do with the twist rate could make a difference there. I know Sig runs 1/5 twist barrels on some short guns. That's pretty fast twist. 8.6 blackout people have reported the fast twist can make jacketed lead bullets expand in the suppressor. |
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No problem look at that second photo... 5:56PM
Coincidence? Its funny how many times I've seen the clock at 5:56. |
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@Green0 so the M4SDK can be upgraded to the new baffle system?
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There was a thread recently where somebody tore up some baffles with an apparent bullet disintegration. I can’t find the thread, but it seemed like it mentioned the ammunition used. Curious if it’s same brand. Maybe somebody recalls the thread.
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Quoted: There was a thread recently where somebody tore up some baffles with an apparent bullet disintegration. I can't find the thread, but it seemed like it mentioned the ammunition used. Curious if it's same brand. Maybe somebody recalls the thread. View Quote |
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So whose ammo do you suspect lead to the problem?
Edited: grammar & spelling |
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Quoted: Quoted: There was a thread recently where somebody tore up some baffles with an apparent bullet disintegration. I can't find the thread, but it seemed like it mentioned the ammunition used. Curious if it's same brand. Maybe somebody recalls the thread. This was the thread I was thinking of. It got lost in GD so I didn’t follow up to see he’s still having problems, most likely an alignment issue. So probably not ammo related at all. https://www.ar15.com/forums/General/A-Bullet-exploded-in-my-brand-new-suppressor-I-think-UPDATE-2-/5-2619857/?page=2 |
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Quoted: So whose ammo do you suspect lead to the problem? Edited: grammar & spelling View Quote It was AAC 5.56 55gr |
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Quoted: @Green0 so the M4SDK can be upgraded to the new baffle system? View Quote If it is a tube over unit (rather than tubeless), it can be upgraded. The ones with the fluted tube are all tube over units. The brake is crazy, it almost looks like the bullet (not just jacket) impacted the baffles in the brake. Thats really quick to be unstable in flight. Through a rifled barrel, the projectile has to be some kind of specially low quality to make that possible. The impacts look like individual bullet impacts almost. Maybe the lead cores of the bullets are splitting into multiple large pieces. |
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Quoted: I think you will like the new stack, there were two somewhat major revisions since your can was made, and they were both kind of significant. View Quote I just got mine back from the upgrade. Front support ring is still the non-perforated type, but the new baffles sound great and definitely do have less backpressure. Thanks. |
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Quoted: I just got mine back from the upgrade. Front support ring is still the non-perforated type, but the new baffles sound great and definitely do have less backpressure. Thanks. View Quote Thanks for your purchase of the upgrade. I’m glad you can notice the improvement / there is a return for the investment. When I got with customer service it had gone out the friday prior to that monday I checked in with them, so I couldn’t consider any changes to the ring. My laser welder is reportedly repaired now, but hasn’t been return shipped yet so it would still be delayed as the only way I could see repairing it would be to machine the mount off and use the new laser welded rear cap component which I didn’t check prints but believe might be the same size in length. Sorry about the timing on that. The current cap on that model is threaded and tig welded in assembly so there is redundancy to how it is attached, but that also is a bit heavier which is what the laser welded version was designed to change in the laser welded M4SD-L (tubeless lighter weight version) which has not been released because marketing is running behind after being put on the fences by shit like Youtube getting temporarily hostile to the firearms industry, requiring research into resolutions and work duplicating content to rumble and vimeo, as well as temporary reduction of efforts to pdf product manual enhancements. |
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Quoted: Thanks for your purchase of the upgrade. I’m glad you can notice the improvement / there is a return for the investment. When I got with customer service it had gone out the friday prior to that monday I checked in with them, so I couldn’t consider any changes to the ring. My laser welder is reportedly repaired now, but hasn’t been return shipped yet so it would still be delayed as the only way I could see repairing it would be to machine the mount off and use the new laser welded rear cap component which I didn’t check prints but believe might be the same size in length. Sorry about the timing on that. The current cap on that model is threaded and tig welded in assembly so there is redundancy to how it is attached, but that also is a bit heavier which is what the laser welded version was designed to change in the laser welded M4SD-L (tubeless lighter weight version) which has not been released because marketing is running behind after being put on the fences by shit like Youtube getting temporarily hostile to the firearms industry, requiring research into resolutions and work duplicating content to rumble and vimeo, as well as temporary reduction of efforts to pdf product manual enhancements. View Quote I’m almost certainly down with a tubeless version. |
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Its too bad Switzerland can’t supply more ammo to the US market.
They seem to take consumer ammunition quality more seriously than US ammunition companies. Europe probably has leaned on politicians to force the US taxpayers into buying all that ammo to charitably donate it to Ukraine. Its too bad we can’t all buy a jogging outfit and get on the free ammo train. |
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