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Thread: No Modification FF Rails

  1. #1
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    No Modification FF Rails

    I recently bought my first AR. After months of research, finding the "chart", and searching this forum I decided on a LE6920 (which I got NIB for an outstanding price).

    Now I want to put a FF rail and had all but decided to go with an 11" or 13" Troy or VTAC TRX with a LP gas block to get some extra purchase.

    Then guys at the club and the local gun shop, who actually stocks the VTAC TRX at internet prices, are advising me not to alter the rifle (pinning LP block, etc) because its a Colt. I think they have swayed me because this route also would relieve me of the expense and hassle of the LP block install.

    So now I started searching for a no-mod solution. I'm leaning toward a CASV-EL http://www.vltor.com/handguards_and_...pics.htm#black
    because its 0 modification, gives me and extra 2"(would have preferred more), doesn't have unnecessary rails, and the top rail system would actually help get a variable mag scope further over the front sight post. But in rob_s's recent post, it doesn't seem to be a common rail solution.

    I was hoping some people with more experience could way in with some advice on this or other options. I have looked at the J Point carbine rail with an extender and the options from DD. DD options seam like a lot of picatinny rail and a lot of $$. But I'm not making this decision on $$ alone.

    My club is going to start 3 gun and I may want to give it a try. 3 gun, IPDA, IPSC is pretty big in my neck of the woods. I will want to maybe use this gun for that initially and I am taking some Carbine courses in a late spring. I plan to run a 1-4 scope. If I get into three gun I will most likely build a 18" upper for that purpose.

    Thanks for any input.
    Last edited by OldState; 03-21-11 at 12:54.

  2. #2
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    you could use the Troy MRF-CX. I have no personal experience with it, but it is FF and requires only cutting off the delta ring. It also extends past the FSB.

    http://troyind.com/%20/battlerails/t...rail-12-mrf-cx

  3. #3
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    Nothing wrong with the VLTOR
    • formerly known as "eguns-com"
    • M4Carbine required notice/disclaimer: I run eguns.com
    •eguns.com has not been actively promoted in a long time though I still do Dillon special
    orders, etc. and I have random left over inventory.
    •"eguns.com" domain name for sale (not the webstore). Serious enquiries only.

  4. #4
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    The new TRX and VTAC Extreme versions (which are not out yet) are supposed to use the stock barrel nut, if you don't mind waiting

    https://www.m4carbine.net/showthread...=46575&page=16

  5. #5
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    The good news is that the Vltor is a very easy install, and if you decide you don't like it it's also very easily removed.

    ETA:
    I'm going to add to the above. The Vltor is heavy as shit for what it is (top-rail only) and also raises the top rail which may require you to buy mounts that you'll have to replace if you replace the handguard. I would personally not opt for it because of this.

    comparision chart of FF rails
    Last edited by rob_s; 03-21-11 at 14:00.

  6. #6
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    Quote Originally Posted by rob_s View Post
    The good news is that the Vltor is a very easy install, and if you decide you don't like it it's also very easily removed.

    ETA:
    I'm going to add to the above. The Vltor is heavy as shit for what it is (top-rail only) and also raises the top rail which may require you to buy mounts that you'll have to replace if you replace the handguard. I would personally not opt for it because of this.

    comparision chart of FF rails
    Is your posted weight with the extra rail pieces? Their website lists it at 13.5 oz.

    Any experience with the CASV-ELS?http://www.vltor.com/casv-els.htm

    That would let me co-witness with any RDS with standard mounts if I wanted to in the future.

    The new VTAC Extreme looks good but I don't know if they with make a slotted rail or extender for a carbine length gas/FSP.

    What are your opinions of the JP rail with extender piece? Wouldn't that be as heavy?

  7. #7
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    The "***" indicates 3.8 oz. added for the delta ring, barrel nut, and handguard cap which all remain.

    I don't think I have the weight handy of hte JP w/ extension, but no it's not a lightweight either.

    If you're set on retaining the FSB, weight will be the tradeoff. You could remove the FSB, do an aftermarket set-screw low-profile gas block, get the barrel dimpled for the set-screw (very minor "defect" if you ever remove it) and install whatever rail you want over top of it.

  8. #8
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    Does anyone have any experience with this:
    http://www.apexcncmachine.com/store....=347061#images

  9. #9
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    I have an older model tube from Apex. They are lighter now, and the top rail is at the same height as the flattop upper (mine wasn't). Mine is a full 12.0 model, but I think the one you linked to might be viable for your needs.

    You may find this link helpful.

  10. #10
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    Don't let people scare you away from the TRX. It is an outstanding rail, and not hard to install. There are plenty of how to videos on the net that show how to remove a front sight block from an AR-15. I have very little mechanical skill and I managed to do this myself. If you don't want the TRX because you don't think it will work for you that's one thing. However, don't avoid it because you don't think you can install it. All you need is a bench mounted vise and some basic hand tools namely a set of punches, hammer, hex wrenches, and a long handled wrench. Here are some videos I used to learn the process. Good luck to you.

    http://www.youtube.com/watch?v=eryr0...eature=related

    http://www.youtube.com/watch?v=ZOA0jA0Ei74

    http://www.youtube.com/watch?v=rK4XzPll9U8

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