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Interesting. I emailed Mr. Swanson about this. I own an LMT but I'm not a fan of MIM at all.
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I have really taken a liking to the Bravo BCG. Tough to get one now, But the best of the bunch. As close to "Bullet Proof" as you can get.
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Looks like some of the parkerizing flaked where the staking was done. If the metal was brittle, it would have cracked. I don't see anything to be excited about.
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Looks like some of the parkerizing flaked where the staking was done. If the metal was brittle, it would have cracked. I don't see anything to be excited about. It is cracked at the stakes so it is brittle. I can put a blade down into the crack. This is not parkerizing flaking at all. The gas key is an important area and the quality is lacking on my father's rifle. His bolt carrier should be exchanged for one in spec. I can see the cracks plainly in my picture. You can't |
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Just got home from work and checked my LMT rifle. Mine is pre-election mania by about 3 months. Mine is normal. Here is a picture http://i478.photobucket.com/albums/rr150/derekcb26/LMTBCGP90XPics004.jpg Here is a picture of the BCG carrier key from my father's LMT post-election. Certainly appears to be mim and is cracked at the staking. He is gonna have to call LMT on that one! Here is a picture http://i478.photobucket.com/albums/rr150/derekcb26/LMTBCGP90XPics006.jpg That is pretty shoddy in my opinion. Gonna make my next 2 rifles Colts. Better chance of getting good quality I hope. The cracks are very apparent in that bottom picture. Weird. |
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I got an LMT BCG in the mail today from Bravo Company. I need to check mine to see if its cracked like the one in the photo.
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I have a couple like that. I do not believe they keys are chrome lined. I have e-mailed LMT.
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I have a couple like that. I do not believe they keys are chrome lined. I have e-mailed LMT. I've got one on order from LMT, I'm curious as to what they have to say |
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What is (a) MIM???? Metal Injection Molding Quoted:
I have a couple like that. I do not believe they keys are chrome lined. I have e-mailed LMT. Let us know what they say. Thanks. |
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Interesting. I emailed Mr. Swanson about this. I own an LMT but I'm not a fan of MIM at all. Tag for the response. |
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I've heard reports of the same mark being found on BCM carriers as well... I would be willing to bet money that this is a single batch issue, and LMT and BCM were both forced to use gas keys from the same source because those were the only ones that could be acquired at the time. My friends new LMT does not have the possible MIM mark on it, and it was bought NIB less than a month ago...
According to Grant of G&R Tactical, LMT is using a black coating inside their Gas Key. Perhaps that is why it looks like it is not chrome lined... ETA: corrected... |
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I've heard reports of the same mark being found on BCM carriers as well... I would be willing to bet money that this is a single batch issue, and LMT and BCM were both forced to use gas keys from the same source because those were the only ones that could be acquired at the time. My friends new LMT does not have the possible MIM mark on it, and it was bought NIB less than a month ago... According to Grant of G&R Tactical, LMT is using a black coating inside their Gas Key. Perhaps that is why it looks like it is not chrome lined... I have a brand new BCM BCG still in the bag. It is a recent purchase maybe a month ago, it has the BCM logo on the carrier. It does NOT look like the one pictured above with the so-called MIM marks. I also have one from maybe 8 months ago that also does not have "MIM" marks. Consider this a report to the contrary. Bill |
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I've got a recently purchased LMT semi-carrier with the cracked staking, un-chromed gas key, and MIM marks as well. It's a spare, so eventually, maybe I'll get a new gas-key for it and replace it and the bolts when I've got some time and feel like tinkering.
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I've heard reports of the same mark being found on BCM carriers as well... I would be willing to bet money that this is a single batch issue, and LMT and BCM were both forced to use gas keys from the same source because those were the only ones that could be acquired at the time. My friends new LMT does not have the possible MIM mark on it, and it was bought NIB less than a month ago... According to Grant of G&R Tactical, LMT is using a black coating inside their Gas Key. Perhaps that is why it looks like it is not chrome lined... I have a brand new BCM BCG still in the bag. It is a recent purchase maybe a month ago, it has the BCM logo on the carrier. It does NOT look like the one pictured above with the so-called MIM marks. I also have one from maybe 8 months ago that also does not have "MIM" marks. Consider this a report to the contrary. Bill This is mostly just a tag for further information but obviously just as all LMT BCGs don't have the marking, not all BCM will have the markings either. More importantly, we don't even know if this is an issue. The staking marks/cracks do look like an issue. |
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Maybe I'm not seeing the issue, but why would the crack prevent the staking job from doing what it is supposed to do? The only purpose of staking to displace some metal onto the screw so as to create enough friction to prevent the screw from backing out. If sufficient metal is contacting the screw, its adequate...
I'm not allowed to link over to "that other site", but when this topic was brought up over there, the consensus from the big players was that the staking in this first pic was adequate... |
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Maybe I'm not seeing the issue, but why would the crack prevent the staking job from doing what it is supposed to do? The only purpose of staking to displace some metal onto the screw so as to create enough friction to prevent the screw from backing out. If sufficient metal is contacting the screw, its adequate... I'm not allowed to link over to "that other site", but when this topic was brought up over there, the consensus from the big players was that the staking in this first pic was adequate... The issue that I see is that if the material is breaking from the stake already, what is stopping it from cracking further. Also, the bigger issue is that if the material can't handle the staking how strong can it really be? |
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I'm not allowed to link over to "that other site", but when this topic was brought up over there, the consensus from the big players was that the staking in this first pic was adequate... "That other site" is not a credible source of info, all of the postings are heavily influenced and controlled by Grant who owns the site and always talks and defends his own product line. Grant also owns G&R tactical and is a high volume LMT dealer. (You put 2 and 2 together here......) I call BS on the "Black inner coating" because it looks just like bare metal to me and scraping it with a paperclip it also feels like bare park. Although there are several knowledgeable industry people who post there none of them replied in the referenced thread. The "big players" that you mentioned in the thread are Grant and gotm4, both of which are involved in the ownership of that website. Also notice how the thread was conveniently closed before the discussion could be taken further. |
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I'm not allowed to link over to "that other site", but when this topic was brought up over there, the consensus from the big players was that the staking in this first pic was adequate... "That other site" is not a credible source of info, all of the postings are heavily influenced and controlled by Grant who owns the site and always talks and defends his own product line. Grant also owns G&R tactical and is a high volume LMT dealer. (You put 2 and 2 together here......) I call BS on the "Black inner coating" because it looks just like bare metal to me and scraping it with a paperclip it also feels like bare park. Although there are several knowledgeable industry people who post there none of them replied in the referenced thread. The "big players" that you mentioned in the thread are Grant and gotm4, both of which are involved in the ownership of that website. Also notice how the thread was conveniently closed before the discussion could be taken further. Why don't we wait for LMT to say whether it is bare park or not? Several people have put in emails. Until then it is just rumor spreading... Other than that, I have always respected gotM4's opinion. I have seen nothing that would indicate his credibility is to be questioned. Until LMT answers some of our emails, I will give gotM4 and LMT the benefit of the doubt... |
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tag for LMT's response.
FYI I have 2 LMT carriers. 1) F/A carrier and "pre-craziness"... stake job looks GREAT. 2) S/A carrier and "post-craziness"... stake job closely resembles those pictured - but not nearly as bad (unless my eyes are playing tricks on me). |
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tag for LMT's response. FYI I have 2 LMT carriers. 1) F/A carrier and "pre-craziness"... stake job looks GREAT. 2) S/A carrier and "post-craziness"... stake job closely resembles those pictured - but not nearly as bad (unless my eyes are playing tricks on me). FWIW I've got 4 LMT carriers. 1 S/A carrier - "pre-craziness"... stake job looks GREAT. 3 S/A carriers - "post-craziness"... stake job closely resembles those pictured. |
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tag for LMT's response. FYI I have 2 LMT carriers. 1) F/A carrier and "pre-craziness"... stake job looks GREAT. 2) S/A carrier and "post-craziness"... stake job closely resembles those pictured - but not nearly as bad (unless my eyes are playing tricks on me). FWIW I've got 4 LMT carriers. 1 S/A carrier - "pre-craziness"... stake job looks GREAT. 3 S/A carriers - "post-craziness"... stake job closely resembles those pictured. If it goes that long when I get home on Thursday I will check all of mine, all 5 pre-election. 3 were bought just before and I will see what they look like. I agree that we should wait to see LMTs response, and until there is a catostrophic failure, I really don't care either way. LMT has more than earned every penny I have spent with them. |
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I've heard reports of the same mark being found on BCM carriers as well... I would be willing to bet money that this is a single batch issue, and LMT and BCM were both forced to use gas keys from the same source because those were the only ones that could be acquired at the time. My friends new LMT does not have the possible MIM mark on it, and it was bought NIB less than a month ago... According to Grant of G&R Tactical, LMT is using a black coating inside their Gas Key. Perhaps that is why it looks like it is not chrome lined... I have a brand new BCM BCG still in the bag. It is a recent purchase maybe a month ago, it has the BCM logo on the carrier. It does NOT look like the one pictured above with the so-called MIM marks. I also have one from maybe 8 months ago that also does not have "MIM" marks. Consider this a report to the contrary. Bill Thanks Bill. BR870, that is not accurate. BCM™ Bolt Carrier Group Gas Keys are USGI (and very expensive) Not MIM. |
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Hope LMT isn't trying to cut corners on their BCGs with going with the MIM parts. I need to get one for my LMT upper.
Hiopefully LMT will clarify the matter. I wouldn't doubt it since their new tactical latch looks to be MIM also. |
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"You will need to send in the carriers. It is not policy to send out
replacement parts for repairs. One other thing, we don't chrome the inside of our gas keys any more, we use a different coating. Please reference rga # xxxx on your return. Also include a copy of your receipt. Best regards, " I received this e-mail from LMT, I have ordered a couple Armalite keys from DSG I would order BCM keys, but they are out of stock. Bushmaster charges me tax (AZ) and high shipping. edit to add: DSG is awesome, I just didn't want to replace these. |
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"You will need to send in the carriers. It is not policy to send out replacement parts for repairs. One other thing, we don't chrome the inside of our gas keys any more, we use a different coating. Please reference rga # xxxx on your return. Also include a copy of your receipt. Best regards, " I received this e-mail from LMT, I have ordered a couple Armalite keys from DSG I would order BCM keys, but they are out of stock. Bushmaster charges me tax (AZ) and high shipping. But this doesn't answer the question as I still haven't seen anything that needed repair. The question we are trying to answer is if the manufacturing process is different and if so what it is....... ETA: One thing that reply did answer was that they are using a "different" coating on the inside of the gas keys which substantiates what was said earlier in this thread and elsewhere. |
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"You will need to send in the carriers. It is not policy to send out replacement parts for repairs. One other thing, we don't chrome the inside of our gas keys any more, we use a different coating. Please reference rga # xxxx on your return. Also include a copy of your receipt. Best regards, " I received this e-mail from LMT, I have ordered a couple Armalite keys from DSG I would order BCM keys, but they are out of stock. Bushmaster charges me tax (AZ) and high shipping. But this doesn't answer the question as I still haven't seen anything that needed repair. The question we are trying to answer is if the manufacturing process is different and if so what it is....... ETA: One thing that reply did answer was that they are using a "different" coating on the inside of the gas keys which substantiates what was said earlier in this thread and elsewhere. and, why did they change the process? what was wrong with the way they WERE doing it? e.g. did the change to cut costs or fix a problem? |
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Well I just received the LMT BCG that I ordered from Bravo Company last week and it does have the MIM marks and cracked stacking
It would be nice to hear more info about this matter from LMT. |
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"You will need to send in the carriers. It is not policy to send out replacement parts for repairs. One other thing, we don't chrome the inside of our gas keys any more, we use a different coating. Please reference rga # xxxx on your return. Also include a copy of your receipt. Best regards, " I received this e-mail from LMT, I have ordered a couple Armalite keys from DSG I would order BCM keys, but they are out of stock. Bushmaster charges me tax (AZ) and high shipping. But this doesn't answer the question as I still haven't seen anything that needed repair. The question we are trying to answer is if the manufacturing process is different and if so what it is....... ETA: One thing that reply did answer was that they are using a "different" coating on the inside of the gas keys which substantiates what was said earlier in this thread and elsewhere. and, why did they change the process? what was wrong with the way they WERE doing it? e.g. did the change to cut costs or fix a problem? Cost cutting. |
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I just sent another email about this after I found the MIM mark and cracked staking on my father's bolt carrier. I asked for replacement with a forged unit that is chrome lined. I also asked that future BCG's be made like they used to be.
I like my LMT but this shows (to me) a serious downgrade in quality and I wonder where else quality is being cut. Will update when I get a response. Derek. |
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I really like my LMT but looks like their going down the same road as a lot of companies. They build a quality product and get a good reputation and then they think they can cut corners/cost. Hope they wise up before they taint their reputation!
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I really like my LMT but looks like their going down the same road as a lot of companies. They build a quality product and get a good reputation and then they think they can cut corners/cost. Hope they wise up before they taint their reputation! You mean like going from H buffers and M16 carriers to semi carriers and carbine buffers in their complete rifles? |
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I really like my LMT but looks like their going down the same road as a lot of companies. They build a quality product and get a good reputation and then they think they can cut corners/cost. Hope they wise up before they taint their reputation! You mean like going from H buffers and M16 carriers to semi carriers and carbine buffers in their complete rifles? I don't think LMT ever used H buffers in complete rifles. |
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"You will need to send in the carriers. It is not policy to send out replacement parts for repairs. One other thing, we don't chrome the inside of our gas keys any more, we use a different coating. Please reference rga # xxxx on your return. Also include a copy of your receipt. Best regards, " I received this e-mail from LMT, I have ordered a couple Armalite keys from DSG I would order BCM keys, but they are out of stock. Bushmaster charges me tax (AZ) and high shipping. But this doesn't answer the question as I still haven't seen anything that needed repair. The question we are trying to answer is if the manufacturing process is different and if so what it is....... ETA: One thing that reply did answer was that they are using a "different" coating on the inside of the gas keys which substantiates what was said earlier in this thread and elsewhere. and, why did they change the process? what was wrong with the way they WERE doing it? e.g. did the change to cut costs or fix a problem? I'm betting these changes are a result of their experimenting with their "enhanced bolt" design. Now arguably the "enhanced bolt" was a solution for a non-existent problem to begin with. I also just put in a cordial email expressing my dissatisfaction with these changes (in the most polite business like way possible). If LMT gets enough customer feedback about this we may be able to talk some sense into them... |
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I really like my LMT but looks like their going down the same road as a lot of companies. They build a quality product and get a good reputation and then they think they can cut corners/cost. Hope they wise up before they taint their reputation! You mean like going from H buffers and M16 carriers to semi carriers and carbine buffers in their complete rifles? I don't think LMT ever used H buffers in complete rifles. this. I don't think a semi-carrier costs any less than a F/A carrier for a manufacturer. So that would hardly be considered a cost cutting measure. |
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I really like my LMT but looks like their going down the same road as a lot of companies. They build a quality product and get a good reputation and then they think they can cut corners/cost. Hope they wise up before they taint their reputation! You mean like going from H buffers and M16 carriers to semi carriers and carbine buffers in their complete rifles? I don't think LMT ever used H buffers in complete rifles. this. I don't think a semi-carrier costs any less than a F/A carrier for a manufacturer. So that would hardly be considered a cost cutting measure. I thought they used to come with H buffers? |
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Depending on the coating they are using, it could be superior to Chrome.
Functionally, the chrome lining in the key probably isn't super critical...but it would be nice to have. As far as the staking...buy a MOACKS. The Pocket version is cheap and they are great to have around. I bought one and have touched up the staking on a lot of ARs. It pays for itself. It costs less than we usually spend on ammo for one trip to the range... Get the tool. http://www.m-guns.com/tools.php# |
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I just received a BCM M-16 bolt assembly today. The carrier key is not MIM and the staking is perfect with no cracks. This is by far the finest bolt with no corner cutting. I was even surprised to have a BCM laser engraved logo on the bolt carrier which is visible from the ejection port.
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I really like my LMT but looks like their going down the same road as a lot of companies. They build a quality product and get a good reputation and then they think they can cut corners/cost. Hope they wise up before they taint their reputation! You mean like going from H buffers and M16 carriers to semi carriers and carbine buffers in their complete rifles? I don't think LMT ever used H buffers in complete rifles. this. I don't think a semi-carrier costs any less than a F/A carrier for a manufacturer. So that would hardly be considered a cost cutting measure. I thought they used to come with H buffers? I don't remember them ever coming with one, but thats not to say they didn't before I became aware of LMT. FWIW as of the first version of jwises AR-15 review they did not have H Buffers. Also, as of the first version of Rob_S's "the Chart" they did not have H buffers... |
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"That other site" is not a credible source of info, all of the postings are heavily influenced and controlled by Grant who owns the site and always talks and defends his own product line. So Chris Costa, Travis Haley, Larry Vickers, Kyle Defoor, the guys from Daniel Defense, Freddie Blish, and countless other people I could name are all Grant's minions? Although there are several knowledgeable industry people who post there none of them replied in the referenced thread. Wait...is the site credible or not? If everybody is Grant's puppet then it isn't. If, however, there are people over there who have good information then BING...it's a source of good information. The "big players" that you mentioned in the thread are Grant and gotm4, both of which are involved in the ownership of that website. Ummm....no. Robb has nothing to do with the ownership of that website. He is, however, a skilled AR armorer with a lot of experience building guns for customers and selling guns in general. He's a good shooter and a hell of a nice guy to boot. As for this particular issue....what has LMT said about it? Contacting the manufacturer about issues FIRST has certain advantages. |
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I really like my LMT but looks like their going down the same road as a lot of companies. They build a quality product and get a good reputation and then they think they can cut corners/cost. Hope they wise up before they taint their reputation! You mean like going from H buffers and M16 carriers to semi carriers and carbine buffers in their complete rifles? I don't think LMT ever used H buffers in complete rifles. this. I don't think a semi-carrier costs any less than a F/A carrier for a manufacturer. So that would hardly be considered a cost cutting measure. I thought they used to come with H buffers? I don't remember them ever coming with one, but thats not to say they didn't before I became aware of LMT. FWIW as of the first version of jwises AR-15 review they did not have H Buffers. Also, as of the first version of Rob_S's "the Chart" they did not have H buffers... I stand corrected. |
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