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Thread: Lower damage

  1. #11
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    Quote Originally Posted by Mike14_07 View Post
    I was out in my shop putting together another lower reciever for a rifle im building. Put the trigger in and went inside to grab my bad-cass, came back and my buddy that i was showing how to put one together, pulled the trigger on it. Put a couple of small dings in the lower. I dont think it cracked anything but i cant really tell. Anyways if you could look at the pics and tell what you think.

    Attachment 42614Attachment 42615
    That's absolutely nothing. It's a non issue. Like another member said, if it bothers you cosmetically then you can touch it up with some aluminum black by Birtchwood Casey. Those 7075 lowers are very tough. One time I accidentally fell (twice) directly onto my BCM (I'm 6'2 270) directly onto the rifle flush. I though I had definitely snapped the thing in half and was in utter shock and disbelief when it didn't have a scratch on it nor was anything bent. Those 7075 lowers are built for war and are very tough.

  2. #12
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    This is a cosmetic issue. I would also note that my lower looks the same as yours, and I have NEVER dropped the hammer without the upper in place. I think it's just cumulative wear from removing the upper without the hammer cocked back. It slaps forward ever so slightly when you do that, and over time...my hammer has a definite wear mark that matches that ledge in the upper. Upper has similar appearance to yours.

    Iraq, what would it matter if the bolt-stop was installed? My hammer won't touch the bolt stop (Geissle and LaRue). Does the USGI hammer?

  3. #13
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    Quote Originally Posted by Iraqgunz View Post
    Was the bolt catch installed when he did this?
    I was going to ask the same thing.

  4. #14
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    Some hammers due to their design (USGI) will impinge against the bolt catch if you allow the hammer to go forward unprotected. This assumes that the lower is within spec. If you look real close below the strike face of the hammer that recessed area will not hit the lower if the catch is installed.

    Quote Originally Posted by WS6 View Post
    This is a cosmetic issue. I would also note that my lower looks the same as yours, and I have NEVER dropped the hammer without the upper in place. I think it's just cumulative wear from removing the upper without the hammer cocked back. It slaps forward ever so slightly when you do that, and over time...my hammer has a definite wear mark that matches that ledge in the upper. Upper has similar appearance to yours.

    Iraq, what would it matter if the bolt-stop was installed? My hammer won't touch the bolt stop (Geissle and LaRue). Does the USGI hammer?



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  5. #15
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    Quote Originally Posted by Iraqgunz View Post
    Some hammers due to their design (USGI) will impinge against the bolt catch if you allow the hammer to go forward unprotected. This assumes that the lower is within spec. If you look real close below the strike face of the hammer that recessed area will not hit the lower if the catch is installed.
    Roger that. Does this have more, or less chance of causing damage to the lower due to transmitting force to the other side of the bolt stop on the lower?

  6. #16
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    I spoke to a gentleman at Geissele and he told me to be careful not to pull the trigger on a lower because Geissele uses extra power hammer springs (although I'm sure it would still take many strikes to do any real functional damage).

  7. #17
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    Quote Originally Posted by Mike14_07 View Post
    I was out in my shop putting together another lower reciever for a rifle im building. Put the trigger in and went inside to grab my bad-cass, came back and my buddy that i was showing how to put one together, pulled the trigger on it. Put a couple of small dings in the lower. I dont think it cracked anything but i cant really tell. Anyways if you could look at the pics and tell what you think.
    I think you should tell your buddy to put his trigger finger on the work bench and then you smack it with a hammer. Then tell him, "That's what my lower receiver felt when you pulled the trigger. Get the picture?"

  8. #18
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    I think the forged and anodized lower is going to be stronger than force imparted by a hammer spring. The main issue as I see it will be the hammer striking the and chipping the anodizing.

    The other issue would be the hammer striking the bolt catch repeatedly and potentially damaging it.


    Quote Originally Posted by WS6 View Post
    Roger that. Does this have more, or less chance of causing damage to the lower due to transmitting force to the other side of the bolt stop on the lower?



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  9. #19
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    Dropping the hammer without a BCG is not good for the lower, but you have to do it an awful lot to actually hurt something.

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