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Thread: LMT MRP piston Cam Pin Wear? - Pics

  1. #21
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    I'm not trying to started a argument with you gentlemen. I'm just kind of upset that this wear is happening when I thought LMT was about quality materials and all that hoopla, sure I'm some some ar15 fanatic, but I would like to get into them and I just wanted a decent lasting rifle to train and have for whenever I needed it guaranteed. Just help me out, please

  2. #22
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    Quote Originally Posted by rifle_eyes View Post
    Yes, I know it was every 3000-5000 rnds, I know what "k" stands for. I also know that you shouldn't have to replace weapon parts every "xx-xx" rnds. A weapon should last a life time with what's in it. You have AKs/1911s/garands, why should this gun be any different?
    You have to replace springs in 1911/garands and sooner or later the AK too. The1911 require probably more maintenance intensive than any other modern contemporary pistol[extractor tension]?

  3. #23
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    Look, I'm not trying to start an argument here or anything. I am just kind of upset that these types of gashes and wear are demonstrating when I haven't even shot, but maybe 800 rounds (mostly being low tier .223 ammo). I called LMT and asked them about it and they insured me that it was normal wear, but there's like hints of indents and you can sell there's a small indent where it's shiney. You can clearly see the shinny indent in the pics I offered.

    I'm wondering is it worth ti switch back to DI system and what will I need in order to do that from the LMT catalog since that's the only rhing I'm able to use.

  4. #24
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    Quote Originally Posted by rifle_eyes View Post
    I also know that you shouldn't have to replace weapon parts every "xx-xx" rnds. A weapon should last a life time with what's in it. You have AKs/1911s/garands, why should this gun be any different?
    I dunno where you get THAT erroneous idea from. They are machines and THEY ALL require PM or they'll fail. Run any of them enough and they'll ALL fail. Period. Some - like AKs and perhaps HK rifles are a bit more durable but they, too, fail.

  5. #25
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    I cant believe no one has actually answered his question.

    Please note that I am in no way a professional. I shot about 1k rounds from a bolt and the cam pin looked exactly like that. Its not designed with a deformation on the cam pin like that, so that means that the part should be replaced. When you put a fresh one in there, its not going to get caught up on the deformation and malfunction. I got a new cam pin for like 8$ shipped. This little maintenance will keep your gun running well!

  6. #26
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    I run a dabb of grease on my cam pins,and I also scribe an arrow on the top of the cam pins to index...right or wrong thats my boonie voodoo.

    As far as any concerns with the MRP,the first thing I would have done is take some better pictures and email them to Gene Swanson at LMT....if there is a problem he will be the first to point it out,and will make recommendations on a remedy.
    Glock Certified Armorer
    Armed Protective Services II

  7. #27
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    I think more discussion is needed on this.

  8. #28
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    You have AKs/1911s/garands,
    I don't know much about AK, how maintenance intensive they are but 1911s and Garands will not go tens of thousands of rounds without attention and parts and they require the intervention of a skilled gunsmith, not a hobbyist. The hobbyist can maintain an AR. I looked at my LMT and the cam pin shows the same wear. It appears to me that it is wearing in, not wearing out as I see metal displaced but not removed. I'm going to keep mine clean and lubed and keep an eye on it. If it needs to be replaced, I will replace it.

  9. #29
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    Quote Originally Posted by rifle_eyes View Post
    Yes, I know it was every 3000-5000 rnds, I know what "k" stands for. I also know that you shouldn't have to replace weapon parts every "xx-xx" rnds. A weapon should last a life time with what's in it. You have AKs/1911s/garands, why should this gun be any different?
    It isn't. I don't know what the maintence intervals are for a AK are, but you can bet the Soviets had some.Semi-auto rifles will require maintence and that means replacing parts as they wear, This is a simple fact. They will not "last a lifetime" with what's in them. 1911's don't . They need the recoil spring replaced every 3000 rnds or so, the extractor tension needs checked regularly,and adjusted as needed, Mag springs will also need replaced I think every 5k, as will mainsprings. (I know,I own one) M1 Garands, (I own 2) they also need the recoil spring replaced when the spring is under 17 3/4" (not sure on the measurement) But, they need checked and replaced as needed. Op-rod tabs can also wear and cause the op-rod to dismount during firing, the fix here is, send the op-rod off to get the tab built back up and reprofiled, or replace the op-rod..The piston on the op-rod also needs checked and if worn below spec, the op-rod needs replaced. The point is, maintence with these rifles, pistols is on going, and will need to be performed to maintain reliabilty.. You want almost maintence free firearms? buy a bolt action rifle, and a revolver,and don't shoot them much, that way they'll "last a lifetime" with what's in them..
    There's a race of men who don't fit in, A race that can't stay still, So, they break the hearts of kith and kin, and roam the world at will..

  10. #30
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    Quote Originally Posted by rifle_eyes View Post
    A weapon should last a life time with what's in it. You have AKs/1911s/garands, why should this gun be any different?
    Oh, man... You showed all your cards now... (Rmpl steps back to watch the show...)
    "Our destruction... will be from another quarter. From the inattention of the people to the concerns of their government, from their carelessness and negligence..."
    ...Daniel Webster, June 1, 1837

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