"The M193 is designed to be instable. In fact, it will begin to tumble even after passing through a piece of rice-paper."
I heard that one several times over the years...
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"The M193 is designed to be instable. In fact, it will begin to tumble even after passing through a piece of rice-paper."
I heard that one several times over the years...
-Steve
Have gun, will travel...
Certified Glock Armorer
Iraq Vet '05-'06
Afghanistan Vet '09-'10
RIP- TSgt Jason Norton and SSgt Brian McElroy, KIA 22 Jan '06, near Taji, Iraq. You'll never be forgotten.
It is amazing how many of these myths I have heard in the barracks, at the range or the LGS.
Only one I haven't seen in the thread.
AR Myth: "You cannot zero an AR in 5.56/.223 at 50 yards. It is physically impossible."
Cameron
Last edited by Cameron; 08-03-11 at 00:56.
Owner/Instructor at Semper Paratus Arms
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It has more to do with 'slapping the bottom of the magazine' than anything else. If you slap the bottom of a magazine and the mag is worn out and the bolt is locked to the rear, it can cause a round to pop out and wedge itself between your bolt and upper receiver. It's a real bitch to clear.
Here's a pic google gave me:
http://4.bp.blogspot.com/_p2CS3e4PGs..._Over_Bolt.jpg
another:
http://quib.weaponevolution.com/Bolt%20Override.JPG
another:
http://i122.photobucket.com/albums/o...6/_DSC0511.jpg
In regards to inspecting magazines for wear: Check for cracks/weld separation on the spine. Check feed lips. If it doesn't pass those tests, I mark them and throw them in the, 'training' pile. Once they double-feed, I toss them.
To check feed lips without a gauge I do the following:
Every in-spec magazine should easily drop-free from a in-spec lower both when loaded and unloaded. Bearing this in mind,
-insert empty magazine, release it. If it doesn't drop free, it can be indicative of feed-lip spreading (the added friction of spread feed lips retards the movement).
-Do the same with the magazine loaded.
-If it passes both of those tests, hold the loaded magazine in your hand and smack the bottom. If rounds pop out, it fails.
Most of the time a mag will fail those tests before it starts to double-feed on you.
Anywho, this is the reason why a push/pull is recommended for seating confirmation rather than a slap.
Dave Merrill
Terrible Technical Writer. Awful Photographer. Lazy Instructor. Kind of a dick.
Loves Tacos.
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