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Thread: MONOLITHIC UPPER

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    MONOLITHIC UPPER

    I want a monolithic upper rifle. I like the look and being able to mount an optic anywhere. Which one do you have and why?
    Spider

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    I have a Vltor vis 2a (10 inch) on a 16 inch rifle, as well as the Mega mono rail mid length on a 12.5 inch rifle.

    The vis is a quad rail, the mega mono has a full length top rail and you can add various sized rails where you want them.

    Both are very nice. If I could only pick one it would be the Mega mono.

    I have small/medium sized hands the Mega mono due to the fact it is "tubular" fits my hands better and feels better than having quad rails.

  3. #3
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    Quote Originally Posted by Spider 6888 View Post
    I want a monolithic upper rifle. I like the look and being able to mount an optic anywhere. Which one do you have and why?
    Spider
    Don't cheat yourself.

    LMT MRP is the gold standard.
    Kein Mitleid Für Die Mehrheit
    What Happened to the American dream? It came true. You're looking at it.

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    Here ya go young fella,,I just asked the same question awhile back !!!! I will be getting/building one in the next few months !!! Lots of good info,,read it all & you Will Believe !!!!

    http://www.m4carbine.net/showthread.php?t=59964
    Last edited by m1a_scoutguy; 09-14-10 at 00:24.

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    Don't limit yourself to proprietary barrels.

    Vltor VIS is the gold standard.

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    While opinions will vary, which ever one you chose I am sure you will be happy with and no one will give you a hard time for it.

    Vltor and Mega are my two favorites. I own the Mega Mono. I went with that one over the vis because there are fewer parts. The vis has actually two parts. The bottom drops from the top. This allows you to attach a grenade launcher to it. Visit their site for a visual demonstration. While this is cool, I will unfortunately never own a true 40mm launcher, so I could care less about that feature. The Mega is a true monolithic upper, just one piece. There are some tech differences too, but I don't think it will matter much. The machining on the Mega is perfect the thing is like art work! Also, the Mega has a deep black finish the Vltor has kind of a gray tint to it. Ive the vltor in person, it just didn't impress me as much. Just my opinion of course.

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    The MRP is fine if you are ok with paying the price for MRP barrels, and whatever few aftermarket barrels there are out there (also pricey). The MRP also allows you to change barrels pretty quickly but then you need to know the zero for each barrel if you want to keep the same optic or have a different optic for each barrel.


    The other mono uppers allow standard AR barrels but are not quick change. You have a lot more options.

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    Colt 6940
    LMT MWS 308

    why not!

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    Quote Originally Posted by Belmont31R View Post
    The MRP is fine if you are ok with paying the price for MRP barrels, and whatever few aftermarket barrels there are out there (also pricey). The MRP also allows you to change barrels pretty quickly but then you need to know the zero for each barrel if you want to keep the same optic or have a different optic for each barrel.


    The other mono uppers allow standard AR barrels but are not quick change. You have a lot more options.
    FYI.....MRPs will now except ANY barrel that any other AR15 would accept. That said...every MRP barrel in the lineup has fantastic accuracy and besides a krieger, Rock SS MRP barrels are the finest and most accurate barrel Ive seen or used and charted on paper in terms of an 5.56 AR, I am not looking to use any other barrel besides the MRP proprietary ones.... There is a reason they cost so much. They have no competitors and MRPs are a complete system and not a neat little upper thingy.

    Vis is POLYLITHIC.....nuff said, not knocking but clearly its not a monolithic rail.

    I will choose not to commit on the mega stuff but they need to at least put some t marks on the rails.
    Last edited by TRIDENT82; 09-11-10 at 07:21.

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    Quote Originally Posted by Hmac View Post
    Don't limit yourself to proprietary barrels.

    Vltor VIS is the gold standard.
    Don't worry he won't...he will have the best of both worlds with any AR barrel he wants as well as the full MRP lineup...not to mention he will have a true monolithic weapon system rather than a polylithic upper...and can hit barrel changes in under two minutes....how fast does the throw away barrel remover thingy on the vis take?
    Last edited by TRIDENT82; 09-11-10 at 05:49.

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    I'm loving mine, going today to zero the second one

    Concerning the zero, you will be amazed on the return to zero. My first test was with PMC ball, took off the optics(T1 combo w/Larue mount/NF w/ Larue) and removed/installed barrel and I was within an inch at 100.
    I will do a more thorough test in the future and after speaking with LMT, I was told it's usually less than that!

    I'm waiting on my 6.8 barrel/bolt-any day!

    I wish I had picked up these earlier--


    Last edited by mark5pt56; 09-11-10 at 06:14.
    GET IN YOUR BUBBLE!

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    Quote Originally Posted by TRIDENT82 View Post
    FYI.....MRPs will now except ANY barrel that any other AR15 would accept.
    Hey Trident, please tell me more about this. I have an MRP piston factory SBR and am interested in other barrel options.
    Last edited by JoshNC; 09-11-10 at 07:54.

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    If I was doing a build, i would likely go with the Mega do to its flexibility in terms of rail location. I have a LMT and love it but there are times when I would like to have a little less real estate in terms of rail.
    "Democracy is two Wolves and a Lamb discusing Whats for Dinner. Liberty is a well Armed Lamb willing to Contest The Majority Decision". Benjamin Franklin, 1755

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    Quote Originally Posted by cop1211 View Post
    I have a Vltor vis 2a (10 inch) on a 16 inch rifle, as well as the Mega mono rail mid length on a 12.5 inch rifle.
    Do you have pics of the Mega rifle? My next build will be an SBR and I want as much handguard as possible w/o blocking use of a can. The Mega mono uppers don't list handguard lengths on the web and after seeing the thread about 11" handguards being too close to 11.5" bbls... I am trying to see the Mega Mono uppers with bbls in the 11.5 to 12.5 range.

    Thanks!
    Kevin

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    Vltor

    "The secret to happiness is freedom... And the secret to freedom is courage." - Thucydides, c. 410 BC

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    Quote Originally Posted by Hmac View Post
    Don't limit yourself to proprietary barrels.

    Vltor VIS is the gold standard.
    I would agree with this.The VLTOR system is really nice, and you can use whatever M4 barrel suits your fancy.

  17. #17
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    I'm sure you will be happy no matter which one you choose. I went with a midlength VIS. I decided on it because it would work with the older style PWS system, didn't require a proprietary barrel, and looked and sounded like it would hold up to abuse well. I have been very happy with it and am thinking about another one for a 6.8 build.

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    Quote Originally Posted by JoshNC View Post
    Hey Trident, please tell me more about this. I have an MRP piston factory SBR and am interested in other barrel options.
    Hi pal, the info is coming from a gent on tos with a thread over there about it.....
    http://www.ar15.com/forums/topic.html?b=3&f=12&t=509830

    Link to get the actually work preformed....
    https://dbmg-llc.3dcartstores.com/MR...sion_p_25.html


    Quote Originally Posted by mark5pt56 View Post
    I'm loving mine, going today to zero the second one

    Concerning the zero, you will be amazed on the return to zero. My first test was with PMC ball, took off the optics(T1 combo w/Larue mount/NF w/ Larue) and removed/installed barrel and I was within an inch at 100.
    I will do a more thorough test in the future and after speaking with LMT, I was told it's usually less than that!

    I'm waiting on my 6.8 barrel/bolt-any day!

    I wish I had picked up these earlier--


    Marks kit really is one of the finer examples of what I am talking about in reference to a system, and just assume he already has his new 6.8 gear pic'd. I watched Mark do a ton of research before investing as heavily and nicely as he did in the mrp system. The MRP is not for a person that does not want to push envelopes and innovate the AR platform and rather just wants a single, nice shooting rifle. The MRP is for diehards imho and not the route to go if you are not going commit yourself to it as it demands quite a penny and more importantly the willingness to actually push the performance and capabilities of it through all the various options it has.

    Now that folks do not have the whole proprietary barrel non issue to spout on....and with plenty of hard data to support the amazing lack of poi shift done by others along with myself, I think the "MRP bent rail syndrome" is the last knock on the system.

  19. #19
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    one of centurion arm's VIS guns with his HK style sights


    and some more VIS CA uppers
    -Too many guns not enough time-
    Rocking: GAP, Desert Tactical Arms ,Centurion Arms, Vortex optics, Badger Ordnance, Custom Gun Coatings, Mile High Shooting, Accushot, Mars Armament, Combat Precision, JD Machine Tech, Sport Optics, Pro Precision Rifles, McCourt Munitions, Copper Creek Cartridge, TAB gear, Manners Stocks, Bartlien Barrels.
    www.modernserviceweapons.com

  20. #20
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    Quote Originally Posted by payj View Post
    I own the Mega Mono... The Mega is a true monolithic upper, just one piece. There are some tech differences too, but I don't think it will matter much. The machining on the Mega is perfect the thing is like art work! Also, the Mega has a deep black finish the Vltor has kind of a gray tint to it...
    Ditto on the Mega Mono. Beautiful craftsmanship.

    One consideration - the VIS receiver is machined from a 6016 forging while the rail section is made from a 6063 extrusion. This Vltor Rep who provided this info also said the VIS was manufactured in this way "because you cannot weld 7075."

    To El Cid - The useable rail length on a mid-length Mega Monolithic Quad-Rail Upper is 14.75", and that on their rifle-length is 3.37" longer, or 18.12". Also, the side-to-side rail width is 2.09".
    "Eternal vigilance by the people is the price of liberty... You must pay the price if you wish to secure the blessing." Andrew Jackson

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