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Questions & Answers
Does this fit the benelli m4 with collapsible stock? If not do you carry one that does? Expert Answer

Unfortunately, this product has been discontinued by the manufacturer and is no longer available. If you are interested in an alternative, you can see the options our Product Experts have picked out on the product page or you can explore your options by going to this link: https://www.opticsplanet.com/riflescope-mounts-rings-and-bases.html

by Carly R., Gear Expert, July 11, 2018

Product Discontinued by Manufacturer

GG&G Receiver Sling Mount Car-15 / M-4 (collapsible Stock), Multi Use Receiver Plate, Ambidextrous has been discontinued by GG&G and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Rifle Scopes & Accessories, Riflescope Mounts, Rings & Bases, Rifle Scope Bases & Rails yourself to try and find the perfect replacement for you!

Product Info for GG&G Receiver Sling Mount Car-15 / M-4 (collapsible Stock), Multi Use Receiver Plate, Ambidextrous

The GG&G Benelli M2 Magazine Extension is easy to install. It attaches quickly and easily without modification to the shotgun. This two shot Magazine Extension uses the factory follower.image

Specifications for GG&G Benelli M2 Magazine Tube Extension (Two Shot):

Length: 6 1/2"
Weight: 6.8 oz
Application: Shooting Accessory

Features of GG&G Mag Tube Extension:

  • Perfect for Military, Law Enforcement and Home Defense use.
  • Fits 12ga Benelli M2 shotguns only.
  • Adds two additional rounds without increasing overall length of the shotgun.
  • The front of the GG&G Benelli M2 Mag Tube Extension does not protrude beyond the barrel of a standard 18.5" model.
  • Unlike the competition, the magazine extension tube nut is CNC machined from wear resistant solid steel bar stock versus aluminum.
  • When installed properly, the solid steel ratchet base on the Benelli M2 mag tube extension nut, securely retains the barrel under recoil.
  • The unique magazine tube extension nut is manganese phosphated in a non-reflective combat finish per Mil-Spec.
  • The end cap of the magazine extension tube can be removed separately to facilitate cleaning and the use of a magazine plug.
  • The magazine extension tube is machined from 6061-T6 aluminum and Type III hard anodized non-reflective matte black per Mil-Spec.
  • Package includes a new extended length magazine spring to insure proper function.
  • Lifetime Warranty

Package Contents:

  • GG&G Gg&g Receiver Sling Mount Car-15 / M-4 (collapsible Stock) - Multi Use Receiver Plate - Ambidextrous 629

Red Dot Mounting Hardware

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GG&G Receiver Sling Mount Car-15 / M-4 (collapsible Stock), Multi Use Receiver Plate, Ambidextrous Unavailable & Discontinued Models

List of Unorderable Models

  • GG&G Sling Mount Car-15 / M-4 Multi Use Plate, Ambidextrous 629 , MPN: 629 , Code: 2G-MT-629
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Last updated 2026-11-02 UTC.