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Accessories Traded- WTS: Daniel Defense RIS II MK18 rail Traded

Bulletsmith

Private
Full Member
Minuteman
  • Jul 11, 2017
    232
    216
    Over there
    Traded today.

    I have for sale a new never used DDMK18 rail. This model can be used with the “A” frame front sight. Had it for awhile and never built an SBR. I have a used M4 barrel that has been fired 400/500 rds.
     
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    that looks like a M4A1 sopmod FSP rail not MK18, the mk18 FSP rail is kinda rare but yours is not like this one in the picture, it should be marked mk18 not M4A1
     

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    that is not a mk18 rail. It is a FSP 12.25 for a 14.5 M4a1 block II and those are pretty common under 300 dollars. 380 new. What is Barrel included? What barrel is it. 14.5? Manufacture? Pics?
     
    Sorry for the confusion, More pics. It is a MK18 Rail. And the barrel I believe is a Colt.
     

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    Sorry for the confusion, More pics. It is a MK18 Rail. And the barrel I believe is a Colt.

    As others said, it is not a Mk18 Rail. Mk18 are shorter. Mk18 use a 10.3” barrel, not a 14.5” barrel. The box you have is not original to the rail. Look at the photo on the box, doesn’t match the rail.

    It’s even marked “M4A1 FSP” on the rail itself. That is what it’s called.

    Also, you are correct on the barrel. “C MP” marked is indeed Colt.
     
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    To expand on and clarify everyone's statements. This is a Mk18 rail. Note the length and markings on it.

    Mk18 CQBR Block II.jpg

    Mk18 CQBR Block II-2.jpg
     
    Just to clarify what is or isn’t a MK18, SOCOM had a MK18 in various forms. The medics and K9 handlers used the shorter barrels. And well the short barrels were just so cool that’s what everybody wanted, I won’t go into further detail.
    The box says MK18 and one the rail is says M4A1 FSP. it’s still a MK18 don’t like it, Don’t buy it. It is what it is. I preferred this type as I don’t like the flimsy front sights mounted on top of the rail.
    I know it’s a rare rail assembly, if the price is too high I will adjust or trade it for a rail (PRI-DD) for a 20in. AR. Thanks for your comments. Mike
    I forgot to add that SOCOM wanted a rail that could be used with an issue M4. As Crane was building the URG (MK18) and DD provided this rail for the conversion.
     
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    To echo everyones statement, that is a m4a1 FSP rail. OP's box however is for a mk18. I say that out of fact, not to diminish the value or sale of the rail. A DD FSP M4 rail is still a very nice and sought after part. Good Luck with your sale.