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Home / Parts and Accessories / ARCA Rails and Accessories

Universal Weight-Tunable ARCALOCK Rail

Rated 4.88 out of 5 based on 66 customer ratings

$185.00

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  • Description
  • Additional information
  • Reviews (66)

ARCALOCK has been a huge success since its release in July of 2018. As the rails have become more popular, we have also seen the rise in popularity of rifle weight kits. With the introduction of the Manners TCS stock in late 2019, we designed and built an ARCALOCK weight system, and are ready to make it available to the general public. This is the 14.25″ Universal ARCALOCK Rail!

WHAT WILL IT FIT – Lots of things. We anticipate this will fit about 98% of Manners PRS1, PRS1, T2A, T2A GAP, T4A, T4A TEAM and T5A stocks. If you’re not sure if it will fit your rifle, you can use the hole spacing print AVAILABLE HERE and some basic common sense to figure it out. We made this as universal as possible, while still retaining weight tuning capability. These kits will come with t-nut hardware to add attachment points if your factory-installed attachment points do not line up with our mounting slots.

WEIGHT – The bare rail weighs just over 6oz. With all 5 included weights in the rail, the weight ends up at about 23.6oz. Each weight weighs 3.5oz.

THICKNESS – These rails are .400″ thick. For reference, our standard 14″, 12″ and 10″ Universal ARCALOCK rails are .270″ thick.

FINISH – Rails will be black hardcoat anodized, and the weights will remain raw brass.

Weight 2 lbs
Dimensions 15 × 2 × 2 in
Manufacturer

Area 419

Package

Rail Only (No Weights), Rail + 2 Weights, Rail + 5 Weights

66 reviews for Universal Weight-Tunable ARCALOCK Rail

  1. Rated 5 out of 5

    Jorge Bonilla (verified owner) – May 6, 2020

    I purchased three of these for my two Manners PRS-1 and CS2 stocks since my rifles were rear heavy. The weight of these rails helped balance the rifle tremendously. I bought the kit with all five weights and ended up using them all. In addition, the added weight has helped tame recoil a bit more.

  2. Rated 5 out of 5

    Derrick warren – May 6, 2020

    A nice touch to the standard arca rail. I put it on my Graboe Ridgeback stock it fits perfect. I left all five weights in because I like heavy a rifle and it balances very nice.

  3. Rated 5 out of 5

    Robin Cox (verified owner) – November 13, 2020

    Great products

  4. Rated 5 out of 5

    Jarred Horsky (verified owner) – January 2, 2021

    Perfect for balancing the rifle and reducing the jump.

    Image #1 from Jarred Horsky
  5. Rated 5 out of 5

    Dan Blake (verified owner) – January 2, 2021

    This is really a must have item for competition. Its very important to have the rifle balance about 4″ in front of the magwell and this product is a big help. Its also amazing to see how not only the total weight on the rifle is critical to mitigate recoil but where that weight is placed. I give this one 10/10 stars.

    Image #1 from Dan Blake
  6. Rated 4 out of 5

    Austin C. (verified owner) – January 26, 2021

    Great product. The finish is beautiful, not a flaw in it. My only complaint would be the lack of longer screws for the T-nuts and a shorter action screw, one long enough to compensate for thickness of rail. Granted, I put this on a Bergara HMR pro and I believe these rails were more geared to fit the manners stocks. But I still got it to work and it works great. Worth every penny, would recommend and will buy again when I get my manners stock.

    Image #1 from Austin C.
    Image #2 from Austin C.
    • Craig Arnzen (store manager) – February 1, 2021

      Hey Austin, we chased the “perfect length action screw” for a while, but ultimately opted for one that’s as long or longer than anyone needs as every stock maker or bottom metal manufacturer seems to be a little different on length. There was unfortunately no perfect answer.

  7. Rated 5 out of 5

    John A. (verified owner) – January 29, 2021

    The design and quality of this ARCA lock rail is excellent. Added 2 front weights in rail and the Front MPA weight Installed on a Matrix MAP chassis and balance point is 3″ in front of mag. Great quality hardware included. Best in class products!!

    Image #1 from John A.
  8. Rated 5 out of 5

    Brett (verified owner) – February 22, 2021

    Great product

  9. Rated 5 out of 5

    rod p. (verified owner) – February 28, 2021

    A great product! Exactly what I was looking for and 419 quality is second to none!

  10. Rated 5 out of 5

    Aaron G. (verified owner) – March 7, 2021

    Well made. The interchange weight system is perfect for creating the perfect balance point of your rifle. It takes a little time to get it perfect but worth the effort.

    Image #1 from Aaron G.
  11. Rated 3 out of 5

    Nowell Greasley (verified owner) – March 24, 2021

    Quality of arca rail is great. The action screws supplied were not the correct size, (did not thread into my action). The weight of this rail was not enough to balance my rifle, it would be nice to have heavier weights.

    Hope this helps.

    • Craig Arnzen (store manager) – March 24, 2021

      Hey Nowell. To fit the largest number of actions possible we include an action screw compatible with Rem 700 (and clone) actions. It would be really implausible to include screws to fit every action out there.

  12. Rated 5 out of 5

    Eldon (verified owner) – March 30, 2021

    Works great! Love the versatility

    Image #1 from Eldon
  13. Rated 5 out of 5

    JUSTIN PAINTER (verified owner) – April 17, 2021

    Great product! As always, Area 419 products continue to impress.

  14. Rated 5 out of 5

    Stephen Cornich (verified owner) – April 17, 2021

    Good

  15. Rated 5 out of 5

    Johnny Sprinkle (verified owner) – June 11, 2021

    The Universal Weight-Tunable Arcalock Rail is a great addition to a rifle to gain the proper balance for barricade shooting. Area 419’s products are top notch in quality and design.

    Image #1 from Johnny Sprinkle
  16. Rated 5 out of 5

    Scott B. (verified owner) – June 16, 2021

    I have the same rail on all of my rifles

  17. Rated 4 out of 5

    Aaron Fisher (verified owner) – June 20, 2021

    Some modification may be required. I am using a Manners PRS2 with Hawkins bottom metal. The radius where the mag well meets the action screw hole location was causing the rail to not sit flush against the forearm. I had to file away at the rail to make clearance. Also, I chose to not mount the rail using the action screw and using the hole just ahead of the action screw one. If you choose to do that, you will need to install a t-nut just in front of the action recoil lug which is a thick part of the barrel channel. I went to ace hardware to get longer screws for this to avoid going super deep with the counter sink. I hope I don’t run into any bad effects from doing this, everything’s been working great so far.

    Image #1 from Aaron Fisher
    Image #2 from Aaron Fisher
    Image #3 from Aaron Fisher
  18. Rated 5 out of 5

    Darryl Paris (verified owner) – June 22, 2021

    I put the weighted rail on my back up rifle/trainer so it matches the weight and feel of my match rifle. I mounted it to a first gen XLR Element (that chassis doesn’t come with a rail) the supplied hardware was perfect & bolted right up. Now my 1st Gen XLR Element chassis matches my XLR Envy Heavy in rail length and rifle weight and balance. So far I’m 10-10 with all 419’s products!

  19. Rated 5 out of 5

    John B. (verified owner) – June 23, 2021

    Well designed and manufactured

  20. Rated 5 out of 5

    scott woodhouse (verified owner) – June 23, 2021

    Great option to add both an ARCA rail and add some weight to help balance my training rifle.

  21. Rated 5 out of 5

    Benjamin (verified owner) – July 3, 2021

    Very good quality

  22. Rated 5 out of 5

    Jose Fachal (verified owner) – July 9, 2021

    Put it on my Bergara B-14 HMR

  23. Rated 5 out of 5

    Justin Rhodes (verified owner) – July 14, 2021

    Great product , fit perfectly on my bergara b14 hmr.

  24. Rated 5 out of 5

    Josh (verified owner) – July 16, 2021

    Works great and very adjustable. You can add weight to wherever you need it.

  25. Rated 5 out of 5

    Dana (verified owner) – July 22, 2021

    works great

  26. Rated 5 out of 5

    Jeremy H. (verified owner) – August 4, 2021

    This is THE ticket. Get the weight in the right place and fire away. I have noticed a great reduction in recoil as well as a really nicely felt impulse.

  27. Rated 5 out of 5

    Mark J Smith – August 23, 2021

    Added the Area 419 weighted tunable arca rail to my Bergara HMR Pro rifle and absolutely love it. It was fairly easy to install. Just one email to customer service with a question that they answered right away. I love the fact that this shifted the center of balance for the rifle to just in front of the front action screw.
    Previously it was stock heavy and center of balance was over the trigger which contributed to significant muzzle rise while shooting. Muzzle rise/flip is non-existent now. I used all 5 weights and love it. I would highly recommend this product.

  28. Rated 5 out of 5

    James H. (verified owner) – September 1, 2021

    Well made

  29. Rated 5 out of 5

    michael hancock (verified owner) – September 4, 2021

    A+A+A+A+A+A+A+A+A+A+A+

  30. Rated 5 out of 5

    Rodrigo Marchetti (verified owner) – October 21, 2021

    Perfect!

  31. Rated 5 out of 5

    Kelvin Walthall (verified owner) – November 17, 2021

    A+

    Image #1 from Kelvin Walthall
    Image #2 from Kelvin Walthall
    Image #3 from Kelvin Walthall
  32. Rated 5 out of 5

    Kyle (verified owner) – December 14, 2021

    Perfect!

  33. Rated 5 out of 5

    Kyl K. (verified owner) – December 14, 2021

    Perfect as always from 419

  34. Rated 5 out of 5

    Sean D. (verified owner) – December 15, 2021

    Well built still need to mount it

  35. Rated 5 out of 5

    Shad Kimbrell (verified owner) – December 19, 2021

    Enhanced the stability of my Comp. Rifle due to the additional weight.
    Stability & recoil management increased, excellent product.
    I run these on all my PRS Comp.Rifles.

  36. Rated 5 out of 5

    john moore (verified owner) – December 22, 2021

    Tighten weights when you get it before your install. Other than that it works as intended.

  37. Rated 5 out of 5

    Jim (verified owner) – January 12, 2022

    WORKS

  38. Rated 5 out of 5

    JOHN (verified owner) – January 19, 2022

    Got this for my CZ 457. Fantastic quality. Very happy.

  39. Rated 3 out of 5

    Bruce (verified owner) – January 20, 2022

    The weight itself is great however the mounting hardware was not. I find it hard to believe the alternative to proper mounting screws were t-nuts. This would cause serious damage to my firearm should I use them, which I will not. I had to go to my local gunsmith for proper mounting screws.

  40. Rated 5 out of 5

    Russ (verified owner) – March 4, 2022

    Excellent for getting the weight needed for stable positional shooting. Fit and finish is superb.

  41. Rated 5 out of 5

    Brian Hoff (verified owner) – March 15, 2022

    Awesome rail and the videos on how to add a T nut and install. Love all the thing I’ve bought from you guys. Will be back for more in the future.

  42. Rated 5 out of 5

    Aley Copley (verified owner) – March 16, 2022

    Great

  43. Rated 5 out of 5

    Kyle (verified owner) – March 16, 2022

    Perfect for adding weight to my CZ 457

    Image #1 from Kyle
  44. Rated 5 out of 5

    Dale Smith (verified owner) – March 22, 2022

    Great product

    Image #1 from Dale Smith
  45. Rated 5 out of 5

    Jeff Rowe (verified owner) – March 22, 2022

    Worked like a charm. It stopped the jumping of my 6 mm arc

    Image #1 from Jeff Rowe
  46. Rated 5 out of 5

    mathew shear (verified owner) – March 23, 2022

    Very adaptable piece of equipment.

  47. Rated 4 out of 5

    Kurt (verified owner) – March 29, 2022

    Very high quality product and works great with a little modification (but that is to be expected for universal product.) I needed longer screws #10-32 screws for the non-action screws which will depend on your application. I believe the included screws are 3/4″ long and I needed 1″ for them to grab sufficiently. I found them from Monster Bolts on Amazon. Mine went on an Bergara HMR Pro. Very pleased.

  48. Rated 5 out of 5

    Brandon (verified owner) – March 31, 2022

    The rail fit perfect on my Bergara HMR. Had to make some adjustments to the front action screw by grinding it down a little.

    Image #1 from Brandon
  49. Rated 5 out of 5

    TYLER (verified owner) – April 2, 2022

    Weights rifle nicely

  50. Rated 5 out of 5

    Tim (verified owner) – April 20, 2022

    Changed the game for my son’s rifle.

  51. Rated 5 out of 5

    Nick Doucet (verified owner) – April 26, 2022

    Fit and finish on this piece is Superb

  52. Rated 5 out of 5

    Anonymous (verified owner) – May 4, 2022

    Nicely machined rail, thank you!

  53. Rated 5 out of 5

    John K. (verified owner) – May 14, 2022

    Worked like a charm, bolted right up.

  54. Rated 5 out of 5

    Johnny Sprinkle (verified owner) – May 24, 2022

    Good piece of equipment to add weight to the front and an Arca rail.

  55. Rated 5 out of 5

    Michael (verified owner) – May 26, 2022

    Fits perfectly on my manners stocked cz 457, and balances out the rifle perfectly.

  56. Rated 5 out of 5

    Robert S. (verified owner) – June 2, 2022

    Worked great on my Bergara B14r

    Image #1 from Robert S.
  57. Rated 5 out of 5

    Brady C. (verified owner) – June 28, 2022

    I put this on my Ar15 to reduce recoil. Maybe an odd application of the rail, but it worked perfectly. super happy with how it fit, installed and its overall quality.

  58. Rated 5 out of 5

    Anthony K. (verified owner) – July 21, 2022

    Absolutely love it, balanced out my rifle really well.

  59. Rated 5 out of 5

    Thaddeus Ernst (verified owner) – July 30, 2022

    I was surprised that the brass weights chattered in their milled out aluminum rail. It made a half way decent rattle- but I solved it by using a layer of the plastic shipping bag as a shim between the brass and the rail. I installed 3 t-nuts in the manners stock- I went to the hardware store and purchased a longer screw for $.64 so I didn’t have to bury the t-nut an inch deep into the stock at the point closest to the action screw. I used a Forstner bit in the stock- which was similar to putting a screw into drywall- the stock drills very easily! The rail just makes the rifle easier and more ergonomic to handle. If you’ve been considering one of these to up your game- go for it! You won’t be disappointed!

    Image #1 from Thaddeus Ernst
    Image #2 from Thaddeus Ernst
  60. Rated 5 out of 5

    John S. (verified owner) – August 17, 2022

    Excellent made product as to be expected!

  61. Rated 5 out of 5

    Dakota (verified owner) – August 25, 2022

    I’ve been using ARCA Lock rails since before they were commercially available, and this upgraded/updated weighted model is exactly what I want on my PRS match rifles, AND to promote improved balance on my young son’s rifles.

  62. Rated 5 out of 5

    Daniel (verified owner) – September 6, 2022

    Item has been manufactured to a high standard

  63. Rated 5 out of 5

    Alex K. (verified owner) – September 28, 2022

    Wish I could have used sling stud thread’s that were already in the stock, but didnt line up. Followed instillation instructions from u tube, and got the job dun. Love the product. Rifle balances really well and like the added weight for recoil managment.

    Image #1 from Alex K.
    Image #2 from Alex K.
    Image #3 from Alex K.
  64. Rated 5 out of 5

    Jonathan Bauer (verified owner) – December 14, 2022

    Product is great quality.

  65. Rated 5 out of 5

    Brady Rigdon (verified owner) – December 14, 2022

    Exceptional quality

  66. Rated 4 out of 5

    Mike A. (verified owner) – January 13, 2023

    I put the Universal Weight-Tunable Arcalock rail on my 6.5 creedmoor to get the proper balance. The UWTA rail weights were the perfect match. My rifle is perfectly balanced with the added benefit of an additional 2 inches of area rail. Only rated. 4 becaua the weight rail did not come with the required MLOCK screws and bolts.

    Image #1 from Mike A.
    Image #2 from Mike A.

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  • Products
    • Reloading Gear
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      • Funnel Kits
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      • Reloading Trays
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    • Parts and Accessories
      • Muzzle Devices
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      • Bipods and Rails
      • Tools and Electronics
      • Gunsmithing & Misc
      • Shooting Bags and Range Gear
    • Core Rifle Components
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      • Patches and Stickers
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  • Area 419 Exclusives
    • The ZERO Reloading Press
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    • ARCALOCK
    • The RailChanger System
    • Master Funnel Kit
    • Performance Packages
  • Brands
    • –
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      • Accurate Mag
      • American Rifle Company
      • Area 419
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      • Bartlein
      • Cole-Tac
      • Defiance Machine
    • –
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