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Posted: 8/27/2007 11:44:30 AM EDT
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Hi all, I'm in the process of building a clone of the Navy carbine that uses the Vltor CASV. Two quick questions: 1. What length/manufacturer barrel does the Navy use on these rigs? 2. Does the Navy only use Eotechs on them? If so, what model? Thanks! |
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i don't know if they use an eotech, but i know that an eotech will not cowitness at all with your front sight. i think if you are interested in cowitnessing, you need to go with an aimpoint & a rasII mount. my friend just built a similar upper like the one you are describing. |
but with the CASV rail on rail application, you are unable to co-witness the irons. co-witness is nice, but today's electronics are pretty bullet proof, and if something goes down, you should automatic transiton to your secondary. |
You of course are correct. (its the oldtimer's disease) But with all that other stuff on the top rail, cowitnessing may not be a priority. |
I'd like to respectfully disagree. i would NEVER transition to my sidearm just because my electro-optic went down, and as far as i know neither would anyone else in combat. Current training in the USMC is to use the Aimpoint M68 as a giant ghostring until you can deploy the BUIS. I have been in a situation where no BUIS was issued and i can honestly say that i would point shoot my primary weapon before transitioning. as long as that shoulder weapon is functioning it will be in use. Although, I have actually transitioned because i thought a mag change in the position is was in would have been too slow but thats a bit different. I know guys who leave their BUIS up all the time making this entire argument moot. |
I have work on the same method with the EOTech. it works fine out to about 15m for me. after that, it becomes a bit difficult.. but that is just me. |
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Navy Designation = Mk 18 Barrel is 10.3 inches, I want to say its a Colt but could be wrong I'm stationed with a couple Navy EOD guys and this is what they are issued. Alot of the pictures show them with the Vltor handguards but they say they also come with KAC guards. Not sure if there is a standard for lights or foregrip. A good bet would be KAC for the foregrip but lots of these guys purchase or have their units buy aftermarket stuff thats not to standard. |
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www.ar15.com/forums/topic.html?b=3&f=118&t=271832 60 pages of discussion on the MK18 and EOD CQBR. |
Yep, you're correct.
Look specifically at page 2. |
Trying not to hijack, but I have been thinking of installing this handgaurd as well. But from what I have read here, Eotech will not cowitness, correct? I figured it cowitness in the lower 1/3rd like when used w/a riser such as larue, YHM, or RRA. Does it only cowitness w/Aimpoint?
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That rail system clamps to the flattop upper, so it raises the surface like 1/2 inch. An EoTech would normally give you a perfect co-witness on a naked flattop upper. It would give you a lower 3rd co-witness with a riser. However the CASV is too tall and the electronics block the sights (I assume, never handled a CASV) On this setup, an Aimpoint will co-witness with a lower-riding scope mount, like a LaRue RASII mount (LT 152) |
Thanks for answering my question. Looks like i'll be skipping on it after all. |
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