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Canada Post Shipping Disclaimer: Canada Post has announced a nationwide strike starting Friday, November 15, 2024, at 12:01 AM EST, halting all operations. No mail or parcels will be processed, delivered, or accepted during the strike, which is beyond our control. In response, we have temporarily disabled Canada Post as a shipping option. We are continuing to fulfill orders through alternate carriers to ensure your packages are delivered. We’ll keep monitoring the situation and provide updates as needed. Thank you for your understanding and support. True North Arms (Last Update: 11/15/24)

Please note: If you are receiving a 'No Quotes Available' error message at checkout, it may be due to a firearm in your cart. Canada Post is the only carrier we have to deliver firearms to customers, and with their service temporarily disabled due to the current strike, this can result in checkout errors. To resolve this, please try removing the firearm from your cart and proceeding with the rest of your order. If the issue persists, please contact us at info@truenortharms.com for assistance. Thank you, TNA.

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Gas system

  • Gas Tube Roll Pin Gas Tube Roll Pin

    Gas Tube Roll Pin

    Won't help you lose weight, be more attractive, or look younger, but it will hold your Gas Tube in place in the Gas Block. Note the length of 8mm. Some aftermarket Gas Blocks are much thicker and require a longer Roll Pin. Mil-spec Blackened spring...

    $1.35
    Add to Cart
  • Gas Tubes for AR-15 Gas Tubes for AR-15

    Gas Tubes for AR-15

    A gas tube is essntial for AR-15-pattern firearms to carry hot gases back to the bolt carrier group. What length of gas tube do I need? Take your barrel and measure the distance from the breech end overall to the gas block shoulder, in inches. Look up...

    $14.93 - $18.23
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  • Canadian National Arms CNA Black Gas Tubes for AR-15 Canadian National Arms CNA Black Gas Tubes for AR-15

    Canadian National Arms CNA Black Gas Tubes for AR-15

    These black gas tubes look great under a free-float handguard because the colour matches the rest of your black rifle. Precision ground and manufactured to mil-spec dimensions. Still made from 304 stainless. What length of gas tube do you need? If...

    $18.56 - $21.97
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  • Spare Set Screw for TNA Steel Gas Blocks (M5x0.8) Spare Set Screw for TNA Steel Gas Blocks (M5x0.8)

    Spare Set Screw for TNA Steel Gas Blocks (M5x0.8)

    So you lost one of the set screws out of your gas block. It happens, that's why we've got spares for you. Next time don't back the screw out all the way, you can get away (easy) with keeping the tip in, no one will notice (this might not be a good...

    $1.82 - $1.92
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  • Front Sight Taper Pin For AR-15

    Front Sight Taper Pin For AR-15

    These pins are what you need if you are working with a front sight/gas block combo build. Uncoated, steel, 2/0 taper pin with a 3/4 inch overall length, replacement part.  These are the pins that are used to pin the front sight/gas block combo to the...

    $8.02
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  • Gas Block, Aluminum, Low-Profile (for 0.75" barrel) Gas Block, Aluminum, Low-Profile (for 0.75" barrel)

    Gas Block, Aluminum, Low-Profile (for 0.75" barrel)

    Yep it's a standard gas block.  Black anodized aluminum For use with a 0.750" barrel and standard gas tube of any length Securely fastens to the barrel with set screws Intended for normal use and environments Weight: 24g Dimensions: 26 x 25 x 38...

    $35.50
    Add to Cart
  • CNA Adjustable Gas Block, Steel, Low-Profile (0.75")

    CNA Adjustable Gas Block, Steel, Low-Profile (0.75")

    The Canadian National Arms (CNA) .75" Adjustable Gas Block is designed to fit under all light weight, free float rail systems from most manufacturers.  The gas block allows you to fine tune your rifle’s gas flow from fully open down to a near-complete...

    $68.72
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  • A2 Front Sight Base with Integrated Gas Block (FSB) A2 Front Sight Base with Integrated Gas Block (FSB)

    A2 Front Sight Base with Integrated Gas Block (FSB)

    This brings back memories don't it? Ah the good old days when AR's were simple and not quite the lego that they are today. This is your standard A1 or A2 height Front Sight Block/Base (FSB). She's pretty fresh and will need you or your smith to drill and...

    $57.17 - $81.87
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  • Shadow Gas Block, Steel, Micro-Profile (for .750 barrel)

    Shadow Gas Block, Steel, Micro-Profile (for .750 barrel)

    This gas block is made of high-grade heat-treated steel that will hold up to any and all abuse that you can throw at it. We call it the Shadow Gas Block because it has a matte dark gray finish. For use with a 0.750" barrel and standard gas tubes An...

    $37.70
    Add to Cart
  • Gas Tubes for 308 AR-Style Rifles Gas Tubes for 308 AR-Style Rifles

    Gas Tubes for 308 AR-Style Rifles

    If you're doing a 308 build you have to navigate a few tricky compatibility issues. You've got to figre out whether your barrel uses the older Armalite AR-10 length gas length, or the more modern DPMS spec. On Armalite AR-10 pattern builds, the gas...

    $28.13 - $29.23
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  • Front Sling Swivel Rivet Front Sling Swivel Rivet

    Front Sling Swivel Rivet

    OEM replacement rivet for your sling swivel hanging below the front sight/ gas block combo. I don't know how this can really be damaged, but if you pull it off we've got you covered. stainless steel  Calibrated head geometries Easy to flare...

    $1.00
    Add to Cart
  • TNA Cerakoted Steel Low-Profile Gas Block, 0.75"

    TNA Cerakoted Steel Low-Profile Gas Block, 0.75"

    Our most popular gas block is a real workhorse. Holds up to any and all abuse that you can throw at it. These have been cerakoted by Red Tower Armoury in Ajax, Ontario.Features: For use with a 0.750" barrel and standard gas tube of any length Securely...

    $57.17
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  • Kojin Adjustable AR-15/AR-308 Gas Block

    Kojin Adjustable AR-15/AR-308 Gas Block

    Low profile steel gas block with a .750" gas journal, made from high-quality steel with black-oxide finish. Adjusts from the front, with locking screw on the side.   This gas block for your AR-15 or AR-308 platform will adjust the gas flow of...

    $79.17 - $83.57
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  • Tengu Adjustable AR-15/AR-308 Gas Block-1661515201

    Tengu Adjustable AR-15/AR-308 Gas Block-1661515201

    A convenient and elegant adjustable gas block design. Adjusts from the front; Adjustment screw has nice clicky detents to keep it in place so there's no need to loosen/tighten a separate screw to lock it in place. 0.5" mounting screw spacing. Long term...

    $94.57 - $98.97
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  • Cerakote Gas Tubes for AR-15

    Cerakote Gas Tubes for AR-15

    A gas tube is essntial for AR-15-pattern firearms to carry hot gases back to the bolt carrier group. These gas tubes have been cerakoted by Red Tower Armoury in some nice colours. Pleas note the cerakote adds 1-2 thousands of an inch thickness which...

    $32.53 - $35.83
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  • Pigtail Gas Tube for AR-15

    Pigtail Gas Tube for AR-15

    These gas tubes are a little longer by wrapping the tube around the barrel a few times. The idea is that the extra length slightly softens the air pressure that gets sent to your BCG, which is supposed to reduce recoil and wear, and improve feeding...

    $41.33
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  • TNA Gas Block, Steel, Low-Profile (for .875" barrel)

    TNA Gas Block, Steel, Low-Profile (for .875" barrel)

    This gas block is made of high-grade heat-treated steel. Holds up to any and all abuse that you can throw at it. Great option for larger diameter barrels  For use with a 0.875" barrel and standard gas tube of any length Securely fastens to the barrel...

    $44.19
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  • SALE
    Gas Block with Triple Picatinny Rails (Clamp-On)

    Gas Block with Triple Picatinny Rails (Clamp-On)

    Ever wanted a gas block quad-rail? If so, this is your part. Down and dirty gas block made from anodized aluminum. Note the top rail is lower than a flat-top receiver, so you'd need an extra tall sight if you plan to install iron sights. For 0.750"...

    Was: $45.07
    Now: $19.11
  • Gas Block, Aluminum, Low-Profile (for 0.75" barrel) (Long Version)

    Gas Block, Aluminum, Low-Profile (for 0.75" barrel) (Long Version)

    This gas block is made of high-grade aluminum. Has been tested at fully-automatic rates of fire. Holds up to any and all abuse that you can throw at it. For use with a 0.750" barrel and standard gas tube of any length Securely fastens to the barrel with...

    $42.32
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