Remington 870 3-Shot Magazine Tube Extensions

Looking for other American Made GG&G Remington 870 Shotgun Accessories?  Find Them Here!  If you prefer a 2-Shot Magazine Tube Extension, you can get it Here!  

Remington 870 3-Shot Magazine Tube Extensions:

Depending on the age of your Remington 870, the GG&G Remington 870 3-Shot Magazine Tube Extensions may require a little bit of modification to the factory magazine tube. 

As long as your specific model 870 does not have a capacity restrictive factory magazine tube, commonly referred to as a Dimpled Mag Tube, the installation does not require any modifications. If the factory tube does have the dimples, they need to removed by the end user or a qualified gunsmith to allow the follower to pass through the factory tube. The instructions cover the required modifications if necessary. If you are unsure, please contact GG&G at 800-380-2540 to discuss the required modifications before purchasing. 

The Mag Tube Extension includes your choice of either a Standard Barrel Clamp, or an M-LOK Barrel Clamp.  The GG&G Three Shot Magazine Extensions use the factory follower, or you can save 10% and purchase the GG&G Remington 870 High Visibility Follower as a money saving package. 

You get 10% off the entire package! The 870 Three Shot Magazine Tube Extension, the GG&G Barrel Clamp of your choice and the GG&G Slotted Stainless Steel Follower.

Remington 870 3-Shot Magazine Tube Extension Specifications:

• Perfect for Military, Law Enforcement and Home Defense use.
• Fits 12ga Remington 870, shotguns only.
• The 870 Three Shot Mag Tube Extension adds three additional rounds and will protrude approximately 2 1/2" beyond the barrel of an 18.5" model.  IMPORTANT: It's important that you realize that having your Mag Tube Extension protrude past the muzzle may cause carbon build-up, scoring or discoloring to the mag tube extension, especially if you are using a ported choke tube.  GG&G does not warranty this type of finish damage to the extension.
• Package includes a new extended length magazine spring to insure proper function.
• The magazine extension tube is machined from 6061-T6 aluminum and Type III hard anodized non-reflective matte black per Mil-Spec.
• The Mag Tube attaches to your 870 with a unique and ergonomic threaded 4130 steel attachment interface providing a Rock Solid Fit!
• Three Shot Tube Length: 8 5/8".
• Weight: 4.4 oz.
• Warranty: Lifetime.
• Made In America By Men And Women Proud To Be Americans!

Standard Barrel Clamp Specifications:

• Strong and lightweight.  
• Provides additional support for extended magazine tubes.
• Held in place by counter pressure steel socket head cap screws.
• All edges have been deburred and softened to protect the shooter.
• Material: 6061-T6 solid aluminum alloy.
• Finish: Type III hard anodized per mil-spec in a non-reflective matte black combat finish.
• Weight: 1.3 oz.
• Warranty: Lifetime.
• Made In America By Men And Women Proud To Be Americans!

M-LOK Barrel Clamp Specifications:

• Ergonomic design.
• Two-part design uses counter pressure socket head cap screws to provide a solid installation.
• Perfect for mounting M-LOK Accessories.
• Precision machined from 6061-T6 billet aluminum.
• All edges are smoothed and rounded for the shooter's safety.
• Finish: Type III Hard Coat Anodized in a non-reflective matte black finish per mil-spec.
• Width: 1.5"
• Height: 2.2"
• Weight: 2 oz.
• Warranty: Lifetime.
• Made In America By Men And Women Proud To Be Americans!