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Thread: Upgrading Colt 6720 Rail

  1. #1
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    Upgrading Colt 6720 Rail

    Good day folks!

    I am brand new to the AR world. This disclaimer is here so if this thread comes off as naive, or I come off as naive, it is because I am naive. With that said, here goes my first thread ever about a brand new rifle....

    I am getting my new Colt 6720 off of layaway in a few weeks. I purchased the Colt due to outstanding reviews and I have never owned a Colt before so I figured it was as good of time as anything to. I have had years of .223 experience but they have all been bolt action rifles. While most of this stock rifle will suit my needs while I break myself in on the AR, I would like to upgrade the rail system to something that can grow with me. Now for the questions, what are the constraints that I will need to know when looking for a rail system (length, weight, compatibility, etc...)? Also, I have been told I will need to upgrade the gas system (naive moment). How much work does this entail? Is adding a new rail system to the Colt something a novice in this type of rifle can do? Is a gunsmith required or it is as simple as exchanging parts?

    Along with responses to this post, please let me know if I in any way did not follow proper thread etiquette. Since I am new all the way around I want to make sure to do things properly so I can gain as much knowledge as possible. Thank you all so much for all of your input ahead of time and I look forward to checking in and reading any/all replies.

  2. #2
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    With the Daniel Defense Omega Rail there basically no gunsmithing required.

    Just remove your plastic hand guards and, following the instructions carefully, install the rail.

    Same with the VLTOR CASV-L rail.

    There are other aftermarket rails offered some of which require that you dremel off your delta ring.

    Samson
    Midwest Industries
    Troy

    all the above offer good quality products.

    Lastly .. before you spend ANY more money read the sticky farm on the forums main page. As an alternative to that use the search function.

  3. #3
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    Thanks!!!

    Looks like the DD Omega 9" is what I'll do. It's in my budget, a good quality rail, and no gun smithing required. That is exactly what I was looking for.

  4. #4
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    Im having a problem searching and finding "Sticky Farm". I will continue to look for it before I send my order in to DD.

  5. #5
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    Quote Originally Posted by rlodi1911 View Post
    Looks like the DD Omega 9" is what I'll do. It's in my budget, a good quality rail, and no gun smithing required. That is exactly what I was looking for.
    I may be off here, because I didn't go check, but if memory serves you'll need a 7" OMEGA rail for your carbine length gas system. Verify before ordering.

    The Omega X FSP carbine may be more in line with what you're looking for.
    Last edited by kdcgrohl; 11-21-12 at 20:46.
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  6. #6
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    Kdcgrohl

    Ok. I think my goal is to increase rail length. So a new gas system will be needed for that? That sound very gunsmith intensive. I guess I either drop in the 7" or do a re-haul. I'd hate to just start throwing parts off of my Colt so perhaps I should think about this longer

  7. #7
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    If you want to add additional space your best bet is the Centurion Arms rail with FSB cut out. You simply cut away the delta assy. There are detailed instructions on how to do it.

    Quote Originally Posted by rlodi1911 View Post
    Ok. I think my goal is to increase rail length. So a new gas system will be needed for that? That sound very gunsmith intensive. I guess I either drop in the 7" or do a re-haul. I'd hate to just start throwing parts off of my Colt so perhaps I should think about this longer



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  8. #8
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    Extending the Gas System

    So it appears I can get away with a larger rail with my current Gas System if I do some mods. That leads me another question; will I gain anything from a larger Gas System? I wanted the Colt to be my base; but, I am excited about making it all it can be (though sometimes things are better left un-tampered with).

  9. #9
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    You are reading that wrong. There really is no such thing as a "larger" gas system.

    Do a search on "shaving FSB"... this will explain cutting down the FSB to allow the use of a free float rail system.

    Honestly, this place has little use for folks that won't invest the time in reading the sticky topics above and using the search function to do research. I literally spent 12 hours reading topics before ordering my last rifle, you need to do so also.

    Also, another tip for the thread of yours that got closed. Stay away from EBay unless you really know what you are doing. They make many SHIT copies of DD and LaRue stuff for airsoft guns. It is not good to go for a real rifle.
    Last edited by AKDoug; 11-21-12 at 23:46.

  10. #10
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    Check out Troy's "delta" and "charlie" models. That might be what your looking for.

    Typed without keys on my tablet with no keyboard

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