S&J Hardware

Remington 870 Series Magazine Extension

SKU REM-870
5 out of 5 stars 9 Reviews
$54.59 Tax
In stock
Capacity/ Extension Size *
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Fits: Remington 870, 1100, 11-87, & Versamax.

CNC machined from 4140 steel.

Finished product will be Cerakoted in Graphite Black

Comes with:

  • 3 Position Sling Plate
  • C Clip (to install sling plate)
  • 1 Million Cycle Magazine Tube Spring
  • No Jam Follower - Type 3

Overall length:

  • +1 - 2.25 inches - Will not work as a bayonet mountable solution. 
  • +2 - 6.75 inches - Will not work as a bayonet mountable solution. 
  • +3 - 8.75 inches

Made in Canada.

Compatibility: *Likely not compatible with any clamp designed for use with a tube made of aluminum, or having a plastic sleeve covering. These tubes tend to be a little thicker in diameter.

License Required Non-Restricted
  • 5 out of 5 stars

    870 2 round extension

    As advertised. Well machined. Complete kit.
  • 5 out of 5 stars

    Remington 870 Series Magazine Extension - MKII

    Perfect! Nothing to complain! sj hardware tiers 1 canadian brand
  • 5 out of 5 stars

    Magazine Extension

    I origininally had installed a Wilson Combat extension on my Remington 870. Then, I decided I wanted to install an M-9 bayonette. Upon receiving the knife, I found the guard ring would not fit over my original extension. That to searching out S&J Hardware. I ordered the new extension, received it and found my attachment lug dimension would not allow installation. Therefore, I ordered S&W mounting lug. So far, mounting that $50 knife has cost over $250! Getting smarter is not always cheap... S&J has been the only solution to my problem. Thank you!
  • 4 out of 5 stars

    Shotgun Extension

    Very high quality shotgun mag extension
  • 5 out of 5 stars

    Best mag tube extension you can get

    Of all the mag tube extensions available, this is the only one I found that is flush with the end of an 18.5” barrel (+2 shot). On top of the the quality and finish are top notch.
  • 5 out of 5 stars

    Everything fits very nicely

    Wish I would have gotten it sooner
  • 5 out of 5 stars

    Great buy

    Excellent build quality, and makes the shotgun look that much better!
  • 5 out of 5 stars

    Great

    Great
  • 4 out of 5 stars

    Extended

    Fit perfect. Still waiting on a detenter to remove the dimples but everything looks to fit great.
Pairs well with

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