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1/16/2015 10:49:15 PM EDT
I paid a little extra to get a Colt M4 over Brand X and have 2 questions:

1.  It came with an extra quick release sling swivel.  I don't see any available holes on the platform to plug it in.  Not on the side, not on top, nowhere!  It's not referenced in the operator's manual.  What is it for and where does it go?  I have an optional top mount sling adaptor if I decide to use it.  Otherwise, I'm entirely satisfied with the 2 point bottom sling configuration.

2.  The barrel is too long to accommodate a standard M7 or M9 bayonet.  Is there such a thing as a bayonet to fit an M4 with a 16" barrel?   I'm guessing the answer is NO.  Bayonets are only meant to go on the military 14" barrels (that whole NFA short barrel rifle thingy coming into play.)
1/16/2015 11:06:47 PM EDT
[#1]
The Rogers Super Stock on the 2012 configuration carbines had a spot for the quick detachable swivels. They Colt dropped that stock in '13. Strange they would still include it in the accessory pack.

And yeah, the 16" barrel is too long to properly mount a bayonet. I believe you can find some with an extra thick base on eBay for
way more $$$ than it's worth to have one.

Welcome aboard and enjoy your new carbine!
1/16/2015 11:08:37 PM EDT
[#2]

Quoted:


I paid a little extra to get a Colt M4 over Brand X and have 2 questions:



1.  It came with an extra quick release sling swivel.  I don't see any available holes on the platform to plug it in.  Not on the side, not on top, nowhere!  It's not referenced in the operator's manual.  What is it for and where does it go?  I have an optional top mount sling adaptor if I decide to use it.  Otherwise, I'm entirely satisfied with the 2 point bottom sling configuration.



2.  The barrel is too long to accommodate a standard M7 or M9 bayonet.  Is there such a thing as a bayonet to fit an M4 with a 16" barrel?   I'm guessing the answer is NO.  Bayonets are only meant to go on the military 14" barrels (that whole NFA short barrel rifle thingy coming into play.)
View Quote




 
That QD inserts into your stock, unless they gave you the standard stock instead of the Rogers one, which is my favourite and has a hole for the QD.




Answer to 2.) is unfortunately, no.
1/17/2015 3:24:50 PM EDT
[#3]
Quoted:
I paid a little extra to get a Colt M4 over Brand X and have 2 questions:

1.  It came with an extra quick release sling swivel.  I don't see any available holes on the platform to plug it in.  Not on the side, not on top, nowhere!  It's not referenced in the operator's manual.  What is it for and where does it go?  I have an optional top mount sling adaptor if I decide to use it.  Otherwise, I'm entirely satisfied with the 2 point bottom sling configuration.

2.  The barrel is too long to accommodate a standard M7 or M9 bayonet.  Is there such a thing as a bayonet to fit an M4 with a 16" barrel?   I'm guessing the answer is NO.  Bayonets are only meant to go on the military 14" barrels (that whole NFA short barrel rifle thingy coming into play.)
View Quote

My friend bought a 6920 in 2013 and it came with the QD swivel also. It will not work unless you have a stock with a QD hole, such as the Super Stoc or a Magpul CTR. As of 2013 they are shipping 6920s with the M4 stock.

I don't see a purpose for a bayonet on a carbine. YMMV
1/17/2015 7:45:04 PM EDT
[#4]
Mine has "2013 Config*" printed on the box, so that would explain it.  Standard M4 stock.
1/17/2015 10:14:12 PM EDT
[#5]
Mine came w/ one too, I use it on the MagPul MOE SL stock I ordered while enduring the CA waiting period. Enjoy your M4, they're awesome!
1/17/2015 10:37:40 PM EDT
[#6]
My 6940 has a mount on the rails for it. Stock is slotted.
1/22/2015 1:49:56 AM EDT
[#7]
My 6940 came with the swivel too and I have the Magpul Stock, but I didn't look for a place to put it.  It also came with 4 rubber deals I guess are covers for the Rails?  The point I wanted to make with my reply is, that mine came with a lug for a Bayonet, so I was wondering where you get one?  Someone said Ebay, so I will check it out.  Do I need one?  No, but I still want one, I think it would be cool, lol
1/22/2015 7:50:35 AM EDT
[#8]
Quote History
Quoted:
My 6940 came with the swivel too and I have the Magpul Stock, but I didn't look for a place to put it.  It also came with 4 rubber deals I guess are covers for the Rails?  The point I wanted to make with my reply is, that mine came with a lug for a Bayonet, so I was wondering where you get one?  Someone said Ebay, so I will check it out.  Do I need one?  No, but I still want one, I think it would be cool, lol
View Quote

It will not work on a 16" carbine length
1/25/2015 12:48:17 AM EDT
[#9]
There used to be a couple people selling extended length M7 bayonets but they were stupid expensive. About $100.
It seems it would be easy to make the handle of an M9 longer since the blade and tang are actually two pieces screwed together.  Or even a spacer between the grip and the endpiece with a longer bolt to hold them together. Not sure if I'm being clear, but if you ever take one apart you'll see what I mean.
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