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Old February 7, 2014, 05:24 PM   #1
Join Date: July 3, 2012
Location: Oklahoma
Posts: 71
Bayonet for colt m4 carbine

I received a bayonet as a gift for my colt m4 carbine. It barely won't fit over my flash hider. Kinda want some opinions and advice. I hope this is the right place for my topic. I thought about filing the inside of the bayonet ring so it will fit over the flash hider but I don't know if there is a specific fit or proper fit. I don't want to ruin the bayonet either. Thanks!
Firefighter88 is offline  
Old February 7, 2014, 07:59 PM   #2
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Location: AR
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No bayo will fit if you want the blade flush with the barrel end on a LE6490 that I know of.
Frankly, I do not know why the bayo lug is there. On the other hand, there are some custom bayos out there.
IMHO, I would just leave it alone.
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Old February 7, 2014, 08:42 PM   #3
Join Date: July 3, 2012
Location: Oklahoma
Posts: 71
It's a le6920....but ya that's what I have heard. Thanks for the input
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Old February 7, 2014, 10:34 PM   #4
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Assuming carbine length gas, the bayonet lug is located to work with a military length M4 barrel, 14.5", not the 16" barrel (the shortest rifle barrel we civilians can legally get without a tax stamp). I haven't given much thought to solutions, hopefully someone can help you.

However, the midlength gas system does position the bayonet lug so it will work with a 16" barrel.
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Old February 8, 2014, 03:33 PM   #5
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I'm assuming you're talking about the M-9 bayonet, the bayonet for the M16a2 though the M4.

This is what it looks like on the M4. If you have a 16 inch barrel then you can expect the barrel to extend another 1.5 inches.

You're not gonna hurt the m-9.

I have all the bayonets for US rifles from the Krag to the A2. The M-9 (shown) is the most handy. I keep mine in my 4 Wheeler for emergency fence repairs. Wire cutter on this puppy works better then any fencing pliers I've used. Heavy enough to dig with.
Kraig Stuart
USAMU Sniper School Oct '78
Distinguished Rifle Badge 1071
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Old February 8, 2014, 03:54 PM   #6
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Gotta agree a lot with that last post. If you're putting a bayonet on a SA Rifle/Carbine and need it to function as a bayonet, you've got bigger problems than how well it fits. But they are incredibly handy utility knives for camping/survival etc.
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Old February 11, 2014, 01:59 AM   #7
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A 16" barrel with a midlength gas system will hold one fine, though.

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