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Wilson Combat Extension Tube for 12 Gauge Remington M870/1100/11-87
As Low As $46.95 Save Up to 33%
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Most Helpful Positive Review Perfect for my 870 Wingmaster
Too old to hunt ducks anymore, and I wanted to bolt on some defense options. You can't find a short barrel but you can start with the magazine extension now! Fit perfect and very well made. Best price around.
Most Helpful Negative Review Doesn"t fit
Received Ext. Tube very quickly from Optics Planet. Tried to install it on an 870. Would only screw on a couple of turns. Tried it on other peoples 870's Out of 5, it only fit one, which was an older one from 1974. The others, made in the late 1990's and early 2000's, no go. Called Wilson Combat....
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Best on the market

by Mitchell, from PA, United States Written on August 14, 2025
Extremely easy to use reliable. Wilson combat quality!
Would recommend: Yes
Was it helpful to you? Yes | No

Magazine plus one

by BG, Verified Owner from TX, United States Written on April 14, 2025
Works great. Spring is a bit long for my SBR 870 magazine tube, so I used the original spring. Optics planet didn’t have it in stock so I back ordered it & it showed up much sooner than expected.
Pros:
  • Works great
Cons:
  • Magazine spring is way too long
Best Used for:
  • Plus one
Would recommend: Yes
Was it helpful to you? Yes | No

Works well, looks good

by tommyt, Verified Owner from CA, United States Written on March 26, 2025
This extension tube came with a spring and a bright green follower. It was a very fast job to install it. The only hiccup I had was when I removed the original threaded cap I was unsure of how to remove the inner cap that held the spring in place. After YouTubing for a bit, I just used some needle nose pliers to wiggle that part out and I was off to the races. Apparently newer 870's have bumps on the inside of the mag tube that keep the spring in place which must be flattened (dremmeled or filed) to remove the spring. Once I know what I was doing my second shotgun took 60 seconds from start to finish to complete this job.
Pros:
  • Looks good
  • Ease of insallation
Cons:
  • Backordered and took a while to get them
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect fit for 870 Tac 14.

by GreyKnight, Verified Owner from NV, United States Written on November 7, 2024
This was exactly what I needed to finish off my Remington 870 Tac-14 build.
Fits perfectly and works great. The sling mount is very useful and I would recommend this to anyone looking for a +1 extension with a Factory / OEM look and solid reliable build.
Pros:
  • Fit & finish
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

mag extension

by trouthunter, Verified Owner from TX, United States Written on September 27, 2024
Wilson Combat products are always of the highest quality and this mag extension is no exception. Fits onto a Remington 870 perfectly without modification.
Would recommend: Yes
Was it helpful to you? Yes | No

12 ga extension

by Boomer, from NH, United States Written on September 7, 2024
Extremely well made. Perfect threads, perfect fit. You can actually swap this from left hand to right sling position. I would highly recomend this product.
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect Fit Extension for Parnder Pump

by Chadbone, Verified Owner from IN, United States Written on March 31, 2024
I have been shopping for a tube extension for a couple of years. Not as a necessity but a want. A lot of what I would see needed modified for what I wanted, a simple, short extension for an additional shell. Not an extension that was going to exceed the barrel length. Reading through a forum, I stumbled onto a gentleman that recommended Wilson Combat, various sizes, and mentioned Optics Planet. With the extension options, I found exactly what I was looking for. Fit my HR Pardner pump 12 gauge perfectly. I was comfortable it would because the Parnder Pump is compatible with Remington 870 parts and accessories. Very happy with this purchase.
Pros:
  • fit perfectly
  • Does not exceed the barrel length
  • All necessary parts included
  • Nicely made, quality
  • Does not require modification
Cons:
  • Shell follower did not fit, not notched for my shotgun
Best Used for:
  • HR Pardner Pump 12 gauge
Would recommend: Yes
Was it helpful to you? Yes | No

Mag extender

by Nickels, Verified Owner from OH, United States Written on February 1, 2024
I really like this. Works good. Wish I would have bought it way sooner.
Pros:
  • works as it should
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

Good extension tube

by Buck, Verified Owner from WI, United States Written on December 2, 2023
Good extension tube for the price! Good heavy spring tension!have no worries about the tube taking abuse.
Would recommend: Yes
Was it helpful to you? Yes | No

Good product

by James Rhine, Verified Owner from CA, United States Written on November 3, 2023
Well built, fits nicely on my 870. Almost sits flush with the end of the barrel on the 18.5 inch 870 express 7 shot. I believe it would be the same on a 14in 870 shockwave. Only real downside I could see was the short spring that came with the kit. If you’re running on the 7 shot like mine I used a longer aftermarket spring and cut it down to size.
Pros:
  • Build & Price
Cons:
  • Spring
Best Used for:
  • Rem 870
Would recommend: Yes
Was it helpful to you? Yes | No
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