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Thread: Questions about Colt AR-15 10" SBR's

  1. #11
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    Gray Ghost,

    I will be at Ken's shop tomorrow. I will ask him if he can/ will build a configuration that you are asking about.



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  2. #12
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    Quote Originally Posted by Iraqgunz View Post
    Gray Ghost,

    I will be at Ken's shop tomorrow. I will ask him if he can/ will build a configuration that you are asking about.
    Thanks, that's very nice of you.
    I emailed them yesterday and they confirmed they can build the 10.5" uppers they feature on their website. However I'm kind of leaning towards purchasing a 6933 right now because I like the idea of a factory Colt SBR. Also the price of the 6933 compared to the MK18 builds is several hundred dollars cheaper (because it doesn't come with a rail, picatinny mounted BUIS, lowpro gas block etc. but that's OK for now).

  3. #13
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    A simple way would be to get a 6933 and then use something simple like an Omega rail.

    Quote Originally Posted by Gray Ghost View Post
    Thanks, that's very nice of you.
    I emailed them yesterday and they confirmed they can build the 10.5" uppers they feature on their website. However I'm kind of leaning towards purchasing a 6933 right now because I like the idea of a factory Colt SBR. Also the price of the 6933 compared to the MK18 builds is several hundred dollars cheaper (because it doesn't come with a rail, picatinny mounted BUIS, lowpro gas block etc. but that's OK for now).



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

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    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

  4. #14
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    You can also get a 6933, cut the FSB down and grind it, then use a rail that will fit over it. It's not terribly difficult and can be done locally.

    Quote Originally Posted by Gray Ghost View Post
    Is "MK18" kind of a general term for a 10.5" barrel/upper?
    The actual MK18 the military uses should be a Colt and KAC parts, right? But Noveske and SAW make equivalents they're calling "MK18's" that are similar but are not made from actual 10.5" Colt barrels or KAC rails.



    Owner/Instructor at Semper Paratus Arms

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  5. #15
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    Yeah for sure. I had a 7" Omega rail on another AR I had and I think it took 10 minutes to install.
    So is Clyde's the only place to get 6933's?
    SAW said they do not sell or order them.
    Next I'll have to find a dealer in town that I can do the Class 3 transfer through. I have absolutely no clue about this process beyond fingerprints and paperwork and $200 but I talked to one gunstore locally about a suppressor a few months ago and have a slight idea about what I need to do. That was on an item they would sell to me (AAC can) however I don't know how they would handle receiving an NFA firearm like a 6933 because they don't actually sell Colt's, I'd need to buy it through Clyde's or somewhere else. There's one on gunbroker right now too.

  6. #16
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    Quote Originally Posted by Gray Ghost View Post
    Is "MK18" kind of a general term for a 10.5" barrel/upper?
    The actual MK18 the military uses should be a Colt and KAC parts, right? But Noveske and SAW make equivalents they're calling "MK18's" that are similar but are not made from actual 10.5" Colt barrels or KAC rails.
    Correct, MK18 has become a general term for a short barreled AR-15 with a ~10.5" barrel and fixed FSB similar in terms of how an M4 is generic for an AR-15 with 14.5-16.1" barrel with M4 notch and fixed FSB. Both similate military configurations. Many manufacturers including LMT and Noveske have produced MK18variants and it has been stated/documented that actual LMT units have been fielded downrange, however this is probably not the place to discuss it as it gets somewhat heated. It could also be argued that Noveske produces a more robust or refined MK18 due to the cold hammer forged m249 barrel which can withstand a greater rate of fire.

    Link to Noveske MK18 upper
    http://noveskerifleworks.com/cgi-bin...since=&status=

    Link to LMT MK18 upper
    http://www.lmtstore.com/monolithic-r...uppressor.html

    Cheers
    Last edited by buddyhoohaw; 02-23-11 at 07:12. Reason: Add links
    Life is like a shit sandwich...the more bread you have the less shit you have to eat.

  7. #17
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    Quote Originally Posted by buddyhoohaw View Post
    Correct, MK18 has become a general term for a short barreled AR-15 with a ~10.5" barrel and fixed FSB similar in terms of how an M4 is generic for an AR-15 with 14.5-16.1" barrel with M4 notch and fixed FSB. Both similate military configurations. Many manufacturers including LMT and Noveske have produced MK18variants and it has been stated/documented that actual LMT units have been fielded downrange, however this is probably not the place to discuss it as it gets somewhat heated. It could also be argued that Noveske produces a more robust or refined MK18 due to the cold hammer forged m249 barrel which can withstand a greater rate of fire.

    Link to Noveske MK18 upper
    http://noveskerifleworks.com/cgi-bin...since=&status=

    Link to LMT MK18 upper
    http://www.lmtstore.com/monolithic-r...uppressor.html

    Cheers
    Wow both of those sites have changed a lot since the last time I was there (year or two ago maybe). That built 10.5" Noveske is the same price as the 6933, very nice. $1500 is about my budget for the rifle. I want to go from a 9 lbs. $4k SCAR/Elcan that I'm scared to cut the barrel on to a 6 lbs. $1500 SBR AR-15 and a little less credit card debt
    Wonder what the wait time is on the Noveske.
    Thanks for the help, my eyes are being opened to the world of Class 3 AR-15's.

  8. #18
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    Quote Originally Posted by Gray Ghost View Post
    Is "MK18" kind of a general term for a 10.5" barrel/upper?
    The actual MK18 the military uses should be a Colt and KAC parts, right? But Noveske and SAW make equivalents they're calling "MK18's" that are similar but are not made from actual 10.5" Colt barrels or KAC rails.
    The "actual" MK18 barrel is 10.3 inches. I have to believe that SAW, the largest Colt parts dealer in the country, isn't making anything. I have purchased complete rifles to barrel assemblies and all parts in between from Elmore for years and have never been disappointed with anything. If you talked to Elmore, what did he have to say about his MK18's?

    Quote Originally Posted by buddyhoohaw View Post
    Correct, MK18 has become a general term for a short barreled AR-15 with a ~10.5" barrel and fixed FSB similar in terms of how an M4 is generic for an AR-15 with 14.5-16.1" barrel with M4 notch and fixed FSB. Both similate military configurations. Many manufacturers including LMT and Noveske have produced MK18variants and it has been stated/documented that actual LMT units have been fielded downrange, however this is probably not the place to discuss it as it gets somewhat heated. It could also be argued that Noveske produces a more robust or refined MK18 due to the cold hammer forged m249 barrel which can withstand a greater rate of fire.

    Cheers
    Where do you draw the line between your opinions and your facts? Noveske has never used an M249 barrel on one of his rifles. I don't believe Noveske ever claimed it. Where do you come up with this stuff?

  9. #19
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    Quote Originally Posted by MK18Pilot View Post
    The "actual" MK18 barrel is 10.3 inches. I have to believe that SAW, the largest Colt parts dealer in the country, isn't making anything. I have purchased complete rifles to barrel assemblies and all parts in between from Elmore for years and have never been disappointed with anything. If you talked to Elmore, what did he have to say about his MK18's?



    Where do you draw the line between your opinions and your facts? Noveske has never used an M249 barrel on one of his rifles. I don't believe Noveske ever claimed it. Where do you come up with this stuff?
    Here is a fact from Noveske's website:

    10.5" Cold Hammer Forged 5.56mm Barrel
    --Made of Mil Spec M249 Machine Gun barrel steel, with heavy M249 Chrome Lining,
    (appx. 2 times as thick as an M4 or M16)


    Believe it now?

    Cheers
    Life is like a shit sandwich...the more bread you have the less shit you have to eat.

  10. #20
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    Quote Originally Posted by MK18Pilot View Post
    The "actual" MK18 barrel is 10.3 inches. I have to believe that SAW, the largest Colt parts dealer in the country, isn't making anything. I have purchased complete rifles to barrel assemblies and all parts in between from Elmore for years and have never been disappointed with anything. If you talked to Elmore, what did he have to say about his MK18's?
    I'm just assuming they're cutting down 6920 barrel's or something to make this http://www.specializedarmament.com/p...tor-917-2.html and this http://www.specializedarmament.com/p...4LE-920-2.html but I could be completely wrong.
    I'm assuming that because I figure actual Colt MK18 barrels might be hard to get but I really don't have any idea how they're making those rifles. I'm not trying to imply anything negative about that company either.
    edit: hey what do you know it says right under the specs for both rifles "Barrel: Colt Mk18" so its probably the real thing.
    Last edited by Gray Ghost; 02-23-11 at 08:27.

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