Comments by "" (@dbmail545) on "How Does It Work: Direct Gas Impingement" video.

  1. I would like to see you compare tilting bolt systems to rotating bolt systems. Despite having owned SKS and SVT -40 rifles there is something in me that is a bit mistrustful of tilting locking bolts.
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  2. My understanding is that Eugene Stoner designed the AR system to reduce the mass of the BCG as it reciprocates. As for gas pressure holding the bolt closed, I don't think that happens. From what I have seen, if there is any gas pressure on the bolt from the cartridge the bolt can't unlock due to friction between the lugs of the bolt and barrel extension.
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  3. I would suggest that the main advantage to the AR system is the low mass of the BCG as it reciprocates.
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  4. Check out the AK Operator's Union 47-74 videos. Much more practical shooting advice that is applicable across platforms. Rob Ski is nearly as cool as Ian with a wackier accent!
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  5. Ah yes, a comparison of 5.45x39 to 5.56x45. Not at all interchangeable (slightly interchangeable in magazines) but for all practical purposes the same.
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