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Thread: Canadian Made, 5R Guardian and Match Series barrels available now

  1. #1
    Business Member Maple Ridge Armourer's Avatar
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    Canadian Made, 5R Guardian and Match Series barrels available now

    Our 5R Guardian and Match Series barrels are precision CNC machined from premium, Canadian made blanks. The blanks are honed and hand lapped and then button cut rifled with 5R rifling to provide us with the absolute best possible foundation from which to machine and assemble all Maple Ridge Armoury barrels. We produce both 4140 CMV Black Nitride finish and 416R SS Bead Blasted finish barrels.

    Material: 4140 CMV or 416R SS
    Treatment: QPQ Black Nitride or Bead Blasted
    223 Wylde 1/8 twist rate with other calibers planned for August 2018
    5R rifled, honed and hand lapped
    11 degree target crown
    Match grade, precision cut chamber
    Nickel Boron extension
    Fluting Style: Straight or Spiral
    Gas Journal: .750"
    Barrel Length: 10.5" carbine gas, 14.5" mid-length gas, 16.1" mid-length gas, and 18.6" mid-length and rifle-length gas

    Made in Canada using premium Canadian barrel blanks from International Barrels Inc.

    Our 5R Guardian Series barrels are precision CNC machined from premium, Canadian made, 4140 CMV steel blanks. Following bore drilling, these blanks are honed and hand lapped. Honing can control bore dimensions down to a tolerance of 0.0001" and the hand lapping is an added quality assurance measure to ensure a concentric and uniform bore. The blank is then button cut with 5R rifling and completely stress relieved. These steps ensure we have the absolute best possible blanks from which to machine our barrels.

    All barrels have precision cut chambers, gas ports, and an 11 - degree target crown . We use an SPR profile to achieve an optimal balance between harmonic resistance , heat resistance, and weight savings. The unique deep cut fluting presents greater barrel surface area to facilitate improved air cooling while dramatically reducing weight without compromising the overall rigidity of the barrel. The 1/8 twist rate will effectively stabilize projectiles between 55gr and 77gr and the 223 Wylde chamber will safely accept both 223 Remington and 5.56 NATO cartridges.

    All Guardian Series barrels undergo QPQ Black Nitride heat treatment. This heat treatment provides superior corrosion, wear, and abrasion resistance while offering the greatest accuracy potential of any barrel heat treating process. Instead of adding material to the bore (like Chrome lining), Nitride treats the existing steel by imbuing nitrogen into the steel itself. This is done through a liquid salt - bath where the added element greatly hardens the steel a few thousand this into the material. As a treatment, Nitride does not add any materials to the bore, rather it treats the bore as it came from the factory. Nitride treats both the inside and the outside of the barrel and does not require any oils to provide corrosion protection.

    All Match Series barrels are made from 416R Stainless Steel.# This provides superior corrosion resistance while offering the greatest accuracy potential possible.# Instead of adding material to the bore (like Chrome lining) which is often uneven in application, the bore on these barrels is precisely cut as it came from the factory thus maintaining the ultra tight tolerances leading to extreme accuracy.

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    Name:  Match 16.1 Barrel 1.jpg
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    Name:  Chamber cutaway.jpg
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    Last edited by Maple Ridge Armourer; 09-01-2018 at 11:38 AM.

  2. #2
    GunNutz Chargerguy's Avatar
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    Will there be any 18.6" Gardian Grendel barrels showing up on the website soon?
    Last edited by Maple Ridge Armourer; 07-16-2018 at 07:50 PM.
    CCFR, CSSA, and NFA member.

  3. #3
    Uber Super GunNutz xdmer's Avatar
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    ^ And a source of bolts ... =)

  4. #4
    GunNutz Chargerguy's Avatar
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    Yes, bolts too please.
    CCFR, CSSA, and NFA member.

  5. #5
    CGN Regular Adam134's Avatar
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    Make these for ar10 308, I'd love to support Canadian

  6. #6
    Business Member wildphil24's Avatar
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    Quote Originally Posted by Adam134 View Post
    Make these for ar10 308, I'd love to support Canadian
    +1 for .308 AR10, 1:11", 20" rifle lenght.
    "To disarm the people is the best and most effectual way to enslave them."
    - George Mason

  7. #7
    CGN Regular 5HoursNorth's Avatar
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    I can't wait for a 308 version , I think now is the time lots of demand
    I would rather in 18.5" rifle or mid length
    Last edited by 5HoursNorth; 07-16-2018 at 06:59 PM.

  8. #8
    Business Member Maple Ridge Armourer's Avatar
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    Quote Originally Posted by Chargerguy View Post
    Will there be any 18.6" Gardian Grendel barrels showing up on the website soon?
    We have plans for these but we are waiting for the NR receivers to start shipping before we produce more long barrels.

    What do you all have to say? Should we build some now? Will you buy them ahead of the receivers showing up?

  9. #9
    Business Member Maple Ridge Armourer's Avatar
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    Quote Originally Posted by Adam134 View Post
    Make these for ar10 308, I'd love to support Canadian
    Working on it now.

  10. #10
    Business Member Maple Ridge Armourer's Avatar
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    Quote Originally Posted by xdmer View Post
    ^ And a source of bolts ... =)
    We have a few options in terms of third party brands.

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