It's inherent in the process, not a quality issue.
Magnesium being a different material, there may be some material differences, but aluminum castings have proven to be unsuitable for AR receiver parts and when people see it used alarms go off.
Not just magnesium, the spark from a lighter or even a Fourth of July sparkler can set it off.
Not doubting you, but are these cast lowers? I can't seem to find any info on the manufacturing process used to make these. If so, then that would = major fail. If that were the case I would imagine these would be maybe just a step up from a Zamak lower.
People have uploaded photos showing flash around pin holes and ejector pin marks on the pistol grip area. The Gen 4 models machine out the section that had the old pin marks. In addition there was a run on sentence on their website that mentioned cast. The edges look very much like molding.
The reinforced takedown pin holes are another clue.
I wonder if Magnesium would work in a non-cast application?
My brother saw Deliverance and bought a Bow. I saw Deliverance and bought an AR-15.
Titanium MMC is where it's at... in maybe 20 years...
I guess this experiment from the University of Minnesota is a hoax then?:
http://www.chem.umn.edu/services/lec.../Thermite.html
N/M.. answered before you edited your post.
Last edited by Shao; 05-07-13 at 16:04.
Why is it a hoax? i'm confused. Sparklers generate an immense amount of energy, well over 1200 Celsius. Sparks from a lighter may get hot enough, but not for long enough to initiate the reaction.
To relate this to the thread: You will not ignite your magnesium lower without a sustained heat of high intensity.
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