The GrovTec Extended Magazine Tube Mount (brand part no. GTSW257) is a black oxide steel clamp built to secure an extended magazine tube on the Remington 870 in 12 gauge, while also giving the shooter three different ways to mount a sling or accessory. It provides a Picatinny rail section, a push-button quick-detach base, and a standard locking swivel stud all in one mount, so shooters can pick whichever sling or light attachment method they prefer. The rail and push-button base sections are reversible and can be mounted to either side of the shotgun, giving left- and right-handed shooters equal flexibility. Beyond mounting options, the steel clamp itself adds real security to the extended magazine tube, keeping it from shifting under recoil.

Key Specifications

• Built specifically for the Remington 870 in 12 gauge.
• Secures an extended magazine tube with a steel clamp.
• Provides three mounting options: Picatinny rail, push-button base, and swivel stud.
• Rail and push-button sections are reversible for left- or right-side mounting.
• Constructed from black oxide steel for corrosion resistance.

Frequently Asked Questions

Can this mount to either side of the shotgun? Yes, the rail and push-button base sections are reversible for either side.

What sling attachment options does this offer? A Picatinny rail, a push-button quick-detach base, and a standard locking swivel stud.

Buy the GrovTec Extended Magazine Tube Mount

Secure your extended tube and add sling options in one part. Order this GrovTec mount from our gun accessories selection, and our Lubbock, Texas team will get it shipped fast.