GrovTec Extended Magazine Tube Mount/Clamp for Remington 870

The GrovTec US Mtmx3 is an extended magazine tube mount which is made specifically for the Remington 870 pump-action shotgun. It gives users 3 different methods for mounting their shotgun accessories, such as a sling. The components which come with this product include a Picatinny rail, swivel stud and push button base. The mount is compatible with the factory 12-gauge extended magazine tube of the Remington 870 and provides it with additional security. Not compatible with other magazine extensions like Nordic Components.

The GrovTec US Mtmx3 Extended Magazine Tube Mount X3 is made of steel in the United States. This is not some cheap knockoff from overseas that is flimsy or poor quality. It is a black colored extended magazine tube mount that is made to last. Therefore, you can be sure that you’re getting a high-quality shotgun accessory with a long lifespan. The manufacturer even provides buyers with a lifetime warranty on each purchase of this extended magazine tube mount. That’s how confident they are in the product.

GrovTec Extended Magazine Tube Mount/Clamp for Remington 870
GrovTec Extended Magazine Tube Mount/Clamp for Remington 870
GrovTec Extended Magazine Tube Mount/Clamp for Remington 870
GrovTec Extended Magazine Tube Mount/Clamp for Remington 870

Now you may be wondering if this mount is suitable for left-handed or right-handed users. Well, it is actually accommodating to both types of shooters. The push button base and the Picatinny rail are totally reversible. This means they can be mounted onto the right side or left side of the extended magazine tube. The mounting process itself should not take more than a couple of minutes. If you’re new to adding mounts to shotgun extension tubes, just follow the simple instructions which are included with it. You don’t need to be an experienced gunsmith to learn this process.

The price of the GroveTec US Mtmx3 is $41.00 on the manufacturer’s website. In addition, there is an option to purchase the same type of mount for the Remington 1100 and various Mossberg models as well.

The GTSW-257 is meant for the 12-gauge extension magazine tube of the Remington 870. The GTSW-256 is meant for the magazine tube of the Remington 1100, Mossberg 935, 930, 590, 835, and 500. However, the most popular version is the one for the Remington 870 because most people own this shotgun anyway. But if you have any of those other shotgun models, then you can still benefit from this mount too.

Vitaly Pedchenko

My name is Vitaly Pedchenko, I started this blog and forum to share information, tips, photos, and advice about the Remington 870 shotgun, accessories, and upgrades. Now I also own AR-15 rifle and MP5 pistol caliber carbine. I am firearms instructor, competitive shooter and IPSC Range Officer. I participate in practical shooting and 3-Gun competitions because they are the best way for me to test equipment and upgrades under stress. I am member of the PRACTICA shooting club. I also participate in REAGO, which provides Tactical Combat Casualty Care training. The main purpose of the Rem870.com blog and forum is to have a compilation of information about the Remington 870 shotgun in one organized, accessible place.

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