Categories
  • DEAL OF THE DAY


  • Adams Arms **


  • AK-47 Parts and Accessories


  • Apex Machining Handguard


  • AR10 & Variants Parts


  • AR15 Parts


  • Back Up Iron Sights BUIS


  • Biometric Locks and Safes


  • Bipods - Quick Detach - Heavy Duty


  • CAA Command Arms Accessories EMA


  • Complete AR-15 Upper Assemblies


  • Daniel Defense Inc.


  • Eotech Holographic Sights **


  • FAB Defense & Mako Tactical


  • Flash Hider - Muzzle Brake


  • Flashlights & Lasers


  • Geissele **


  • GG&G Tactical Products


  • Gift Certificates


  • Guntec USA


  • Handguards - AR-15 Forearm - Quad Rail


  • KNS Precision


  • PHASE 5 SHIPS FREE


  • Magazines


  • Magpul Industries


  • MI Midwest Industries **


  • Mission First Tactical MFT


  • MUST HAVE AR-15 UPGRADES


  • Optics - Holographic - Scopes


  • Pistol Grips Modular AR15 AR10 M16


  • Primary Weapons Systems **


  • RRA Rock River Arms


  • Shotguns


  • Sightmark


  • Slings and Accessories


  • Spike's Tactical


  • Stocks - AR15 M4 AR10 G3 FAL Buttstocks


  • Streamlight

  • Triggers


  • Troy Industries


  • UTG Ultimate Tactical Gear


  • Vertical Forward Grips AR15


  • VLTOR Weapons Systems


  • YHM Yankee Hill Machine Company


  • View All Products ->

    All Products sorted by Categories ->

    All Products sorted by Manufacturers ->
    Specials more
    Command Arms CAA SVG Front Arm Short Vertical Grip AR15 AK47
    Command Arms CAA SVG Front Arm Short Vertical Grip AR15 AK47
     $20.39  $14.95 
    Who's Online
    There currently are 45 guests and 
    1 member online.
    McFarland One Piece Gas Ring for AR-15 Bolt AR15 [MRING]  $3.95  $3.50 
     
    box_bg_l.gif.

    McFarland One Piece Gas Ring for AR-15 Bolt AR15

     

     

     

     

     

    Reassembling an AR-15 involves aligning the gaps in the gas rings to make sure they are as far apart as possible. We do this to avoid all sorts of problems and malfunctions and the standard rings need to be replaced about every 3000 rounds. Finally, there's a solution that permanently eliminates the need to adjust the rings' alignment, and lessens the chance of jamming.

    Break In Note: Our Mcfarland's measure .503" diameter.  THESE ARE AUTHENTIC MCFARLAND'S MADE IN THE USA BY COMPETITION SPECIALTIES. CORRECT SIZED AUTHENTIC MCFARLANDS ACTUALLY CREATE MORE FRICTION WHEN NEW AND RUN A BIT TIGHT WHEN NEW.  I TYPICALLY OVER LUBE WITH MOBIL-1 AND WORK THE BOLT BACK AND FORTH ABOUT 50 TIMES, CLEAN THE CARRIER AND REPEAT A FEW TIMES UNTIL THE OIL STOPS LOOKING GREY AND DIRTY. THIS POLISHING IS ALL THE BREAK IN I'VE NEEDED.  COMPETITION SPECIALTIES RECOMMENDS A BREAK IN OF 250 ROUNDS AND STATES THESE RINGS LAST AT LEAST 10,000 ROUNDS. THEY HAVE BEEN FLAWLESS FOR ME AND I'VE HAD NO COMPLAINTS OTHER THAN THEY ARE STIFF INITIALLY.

     

    How It's Supposed To Work
    Upon firing, as the pressure of the gas generated by the burning propellant drives the projectile down the barrel and past the gas port, a small quantity of the gas is bled off through the gas port, gas tube, and bolt carrier key into the cylindrical section in the bolt carrier where it expands and drives the bolt carrier rearward. During the first rearward travel of the carrier, the bolt is rotated by the cam pin acted on by the bolt carrier cam slot. This rotation disengages the bolt lugs from the barrel extension lugs and so the bolt is unlocked. The carrier then continues rearward with the unlocked bolt. At this point, the gas used to drive the bolt carrier rearward is allowed to bleed out through two holes on the right of the bolt carrier.

    The Problem
    In order to install the rings on the bolt, they must be split and thus a "gap" on each ring is unavoidable. The problem arises because these gaps can become aligned, and cause too much gas to escape too early in the cycle. This can result in short-stroking and possibly jamming the rifle, so manuals and instructors enforce the proper alignment of the rings when reassembling the AR-15 rifle.

    The Solution
    The McFarland one-piece gas rings solves the problem of "aligned" gaps by eliminating the gaps. As a one-piece helical ring, you are guaranteed to never have the problem with the gaps.

    Replacement
    The 3 individual rings can be removed one at a time starting with the rearmost ring first. Lift one end of the open ring up and over the edge of the ring groove (towards the rear of the bolt) and then work the other end over. Repeat this for the remaining two rings, and you should be able to remove them without damage. As a single piece of metal, the McFarland ring is wound onto the groove on the bolt's rear. Start one end over the edge, and then work the remainder of the ring over that edge; the easiest way to accomplish this is without trying to turn the ring itself.

     


       
         
    Current Reviews: 4
    This product was added to our catalog on .
    box_bg_r.gif.
    Reviews Add to Wish List
    Quantity:     
    Customers who bought this product also purchased
    McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams

    Quick Find
     
    Use keywords to find the product you are looking for.
    Advanced Search
    Your Account
    Your Email Address
    Your Password
    Featured more
    FAB GL-MAG AR15 Survival Buttstock w/Built–in Magazine Carrier
    FAB GL-MAG AR15 Survival Buttstock w/Built–in Magazine Carrier
     $124.50  $99.95 
    Reviews more
    McFarland One Piece Gas Ring for AR-15 Bolt AR15
    Purchased this after reading both positive and negative revi ..
    2 of 5 Stars!
    Articles
    New Articles (0)
    All Articles (9)
    AR-15 Common Questions (9)
    Information
    Terms and Conditions
    Shipping and returns
    Privacy
    News
    Is Inventory LIVE?
    What is PlugNpay?
    Is vtsupply.com heartbleed safe?
    Gift Voucher FAQ
    Links
    Contact us
    Positive SSL on a transparent background
    VTSupply is PCI Compliant
    Follow VTSupply on Twitter
    Support GOA
    Support NRA


      Secure SSL Certificate