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Thread: BCM Lower not compatible with PMAG Gen3

  1. #111
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    Quote Originally Posted by Jellybean View Post
    so apparently every brand has their "moments" where they don't shine as bright as we'd all like.
    Truth.

    To the others that stated read the thread, I did. My request with PA was to verify the lower I received was indeed compatible with M3 pmags which in my mind gave me some recourse if there was an issue. PA stated they were compatible, which in reality might not be an accurate statement, however my singular sample BCM is gtg with M3, as is every LMT lower I have.

  2. #112
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    Quote Originally Posted by C4IGrant View Post
    Depends on how you look at it. I have never struggled with over inserting a mag. I have, however bumbled a reload. So flared mag wells aid in me getting the gun back up and running. Now, if you are heavy handed and cause malfunctions by slamming the mag into the gun, then you will have a different POV.

    Let us also note where the BCM flared mag well comes from (HK 416). This was done at the request of Mr. Vickers (who worked on the 416 project and saw the value of a flared mag well).
    C4
    Over insertion of mags might be more likely on an active two way range. And the Gen 3 PMAG was designed to be compatible with the HK 416/M27, it is my understanding that is why they moved to over insertion tab to the rear. It's not the mag well flaring that is the problem it is the area around the front of the trigger guard that protrudes a little too much. And yes Noveske had a problem back in 2012 and immediately corrected it going forward, where BCM has dropped the ball is digging their heels in and adopting a "not my problem" attitude. I don't see how they can continue that with the widespread adoption going on in the military.
    Last edited by mack7.62; 04-09-18 at 19:30.

  3. #113
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    Quote Originally Posted by mack7.62 View Post
    Over insertion of mags might be more likely on an active two way range. And the Gen 3 PMAG was designed to be compatible with the HK 416/M27, it is my understanding that is why they moved to over insertion tab to the rear. It's not the mag well flaring that is the problem it is the area around the front of the trigger guard that protrudes a little too much. And yes Noveske had a problem back in 2012 and immediately corrected it going forward, where BCM has dropped the ball is digging their heels in and adopting a "not my problem" attitude. I don't see how they can continue that with the widespread adoption going on in the military.
    I have about 10 guns that don’t work with GEN3 PMAGS. NOVESKE, DD, Colt, BCM, LWRC, etc. In some instances, I think it is tolerance stacking. I look at as they all work with USGI and GEN 2 PMAGS so it CANNOT be the fault of the lower. I also do not have any issues with the GEN 3’s. I just don’t buy buy them.


    C4


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  4. #114
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    Quote Originally Posted by C4IGrant View Post
    I have about 10 guns that don’t work with GEN3 PMAGS. NOVESKE, DD, Colt, BCM, LWRC, etc. In some instances, I think it is tolerance stacking. I look at as they all work with USGI and GEN 2 PMAGS so it CANNOT be the fault of the lower. I also do not have any issues with the GEN 3’s. I just don’t buy buy them.


    C4


    Sent from my iPhone using Tapatalk
    Thanks for that.

  5. #115
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    My old DD lower and Noveske gen2 lower work just fine with my M3 PMAGs.
    "If force can take away liberty, force is necessary to preserve it. It is the hatred of violence alongside the willingness to use violence that preserves liberty. In order for us to live as free men, we have to hate the violence that takes away liberty, yet at the same time, we must embrace the violence that preserves it. That is the paradox our founders appreciated and made work for over 200 years."

    -Christopher Brownwell

  6. #116
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    Quote Originally Posted by Waylander View Post
    My old DD lower and Noveske gen2 lower work just fine with my M3 PMAGs.
    Like Grant said, Noveske fixed their problem quickly. I have it bookmarked on this site where it was stated, but it was only serial numbers below 4800 that went out not compatible.
    Last edited by mig1nc; 04-10-18 at 05:35.

  7. #117
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    If you think about it in another way, BCM uses a 1/7 twist barrel. Hornady 50gr ammo does not shoot that well with this twist rate. Their 70gr ammo does however. Does that mean that Hornady makes poor ammo? Does it mean that BCM's twist rate is a poor choice? No, neither. It just means that not every .223/5.56 load that Hornady makes is going to work well in a BCM barrel...


    C4

  8. #118
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    Differences is 50 grain ammo actually works out of a 1/7, just not ideally vs a mag that won't.


    Quote Originally Posted by C4IGrant View Post
    If you think about it in another way, BCM uses a 1/7 twist barrel. Hornady 50gr ammo does not shoot that well with this twist rate. Their 70gr ammo does however. Does that mean that Hornady makes poor ammo? Does it mean that BCM's twist rate is a poor choice? No, neither. It just means that not every .223/5.56 load that Hornady makes is going to work well in a BCM barrel...


    C4

  9. #119
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    Quote Originally Posted by themonk View Post
    Differences is 50 grain ammo actually works out of a 1/7, just not ideally vs a mag that won't.
    Not really. I have seen some minute of water buffalo groups once you get past about 100yds. I can also "make" as GEN 3 PMAG work in a BCM lower (with ease).


    C4

  10. #120
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    IMG_7534.jpg

    Current production BCM Lower with a GEN 3 PMAG. :-)




    C4

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