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Posted: 2/5/2011 12:45:38 PM EDT
| I bought one of the DD uppers and BCG from the recent deal at SmartGunner. DD BCGs are advertised as being MP tested, but there is no marking on the bolt. I am assuming that they just don't mark 'em like BCM does. Is that the case here? |
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Funny, this brings to mind one of those nagging "back of the mind" type questions I have always had...yeah, OK, I think too much sometimes.
BUT, isn't it possible that after the proper testing is done and then the bolt/carrier/barrell/whatever has passed...AND then it is marked by stamping, engraving or what ever means...that the test could now be invalid because just the process of marking the product as tested could slightly alter or even damage (even slightly) the product? Yeah I know, that's reaching, but in the etreme, say a bolt is tested then some ham-fisted employee or out of spec stamping machine stamps the part too hard and cracks it internally, or that is invisible to the naked eye, or just the loss of material from engraving it changes the structure...or even if laser engraved, the heat changes the molecular properties in that area....is the test still valid?? Inquiring minds want to know. :-) Personally I would prefer a part (say a bolt) with a "Test Pass Tag", or even in a sealed bag marked test passed vs one that is stamped/engraved etc after the test showing it passed. In reality anyone can stamp or engrave any part with an MP, MPI or whatever with no testing or QC...it doesn't really mean anything, it's just a mark. In the end it is all about trust in conjunction with a reputation for quality.. and DD has earned both, at least for me. |
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Quoted: Funny, this brings to mind one of those nagging "back of the mind" type questions I have always had...yeah, OK, I think too much sometimes. BUT, isn't it possible that after the proper testing is done and then the bolt/carrier/barrell/whatever has passed...AND then it is marked by stamping, engraving or what ever means...that the test could now be invalid because just the process of marking the product as tested could slightly alter or even damage (even slightly) the product? Yeah I know, that's reaching, but in the etreme, say a bolt is tested then some ham-fisted employee or out of spec stamping machine stamps the part too hard and cracks it internally, or that is invisible to the naked eye, or just the loss of material from engraving it changes the structure...or even if laser engraved, the heat changes the molecular properties in that area....is the test still valid?? Inquiring minds want to know. :-) Personally I would prefer a part (say a bolt) with a "Test Pass Tag", or even in a sealed bag marked test passed vs one that is stamped/engraved etc after the test showing it passed. In reality anyone can stamp or engrave any part with an MP, MPI or whatever with no testing or QC...it doesn't really mean anything, it's just a mark. In the end it is all about trust in conjunction with a reputation for quality.. and DD has earned both, at least for me. You are overthinking this way too much. Proof marks are required to be struck in many components in several countries to meet import/export rules. Nothing has ever been a problem because of the proof mark to an extent where they would alter the proofs. Your last point is very relevant and correct though. Anyone can just slap whatever they want on their parts unless it is a government or official proof house (i.e UK or German). It really does end up coming down to reputation and trust. |
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Quoted:
Just want to say that I am not trying to bash DD in any way. I am extremely happy with the upper. I was just curious about the bolt. I'm not trying to stir the pot here. Thanks for the responses. I thought it was (and is) a great topic, not that my opinion matters, I didn't think for second it was DD bashing. I have seen the question asked a few times in other places and it is great they we have the nice folks from DD here to answer stuff like this for us. |
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