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Posted: 5/1/2009 5:36:09 AM EDT
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I got a good deal on a stripped High Standard upper but it does not have M-4 cuts is this a big deal? I am a noob to building and am working on my frist.
thanks for any help Ken |
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Its my opinion that the M4 hooplah is nothing more than hype.
First off, the vast majority of AR owners arent running their guns full auto, they arent shooting them into self destruction either. The M4 cuts and barrel extension are merely a single further step in keeping your weapon from jamming. Barring that you have good mags and solid parts in a clean gun, you should have relatively few jams anyways. The biggest problem is that in a bad situation, if you need a replacement barrel and all you have is the M4 upper you must use the M4 extension. If you have an A3 upper you can use whatever you want. Im not 100% on this but I dont think anyone uses the M4 for any conversions ie 9mm or 40SW 45ACP. I know that the designer of the 458 SOCOM (which Ill be building several of this summer) prefers to use A3 uppers as well. M4 cuts are much like Chrome lined barrels..........nice thoughts to help out a soldier in a bad day but not really necessary and certainly not necessary for arm chair commando types. Im lucky if I get 100 round out of each rifle I have in a couple months and that my friend is a lot of shooting (with my pile) and I religiously clean all my weapons. |
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Don't sweat it. Without ramps in the upper, you can use either a barrel with an M4-type extension or a rifle-type (shallower feed ramps) extension.
The reason M4 ramps were developed was that SOMETIMES an M4 with its short gas system would slam the BCG back so fast that SOME magazines might not raise the next round high enough to be guided by a rifle-type feed ramp. And this appears to have happened ONLY in automatic fire. So for most of us, M4 ramps are more "gee whiz" than practical. |
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