Shotgun Mag Clamp

(24 customer reviews)

$10.49

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SKU: SMC1100
Description

Compatibility

  • Fits: All 12 Ga Shotguns

Product Highlights

  • Strengthen the Connection of the Mag Extension to the Barrel
  • May Also be Used to Mount 1″ Diameter Light or Laser to Barrel
  • Includes Sling Swivel Stud
  • Swivel Stud is Reversible for Right or Left-Handed Shooters
  • Easy Installation
  • Extreme Temperature Glass Reinforced Polymer
  • Manufactured in the USA
  • Limited Lifetime Warranty
Why ATI

Why Choose the ATI Shotgun Mag Clamp?

The ATI Shotgun Mag Clamp is designed to help secure a compatible magazine extension to the shotgun barrel while adding support to the front of the shotgun.

The SMC1100 provides a simple, durable way to reinforce the relationship between the barrel and magazine tube on compatible shotgun configurations.

Adds Support to Magazine Extension Systems

Extended magazine tubes can place additional leverage on the front of the shotgun.

The ATI Shotgun Mag Clamp helps support the magazine extension by tying it more securely to the barrel, reducing unnecessary movement and creating a more stable front-end setup.

Helps Maintain Alignment

A properly installed magazine clamp helps keep the barrel and magazine tube positioned consistently in relation to one another.

That added support is especially useful on shotguns equipped with longer magazine extensions where extra front-end stability is beneficial.

Compact, Low-Profile Design

The SMC1100 is designed to add support without creating unnecessary bulk.

Its compact profile keeps the front of the shotgun clean and straightforward while still providing the reinforcement needed for compatible magazine-extension configurations.

Durable Construction

The Shotgun Mag Clamp is built for regular shotgun use and designed to remain secure through normal handling, transportation and range use.

Its simple mechanical design provides dependable support without adding unnecessary moving parts.

Useful for Replacement or Upgrade Applications

The SMC1100 can be used when replacing a missing or damaged magazine clamp or when adding support to a compatible aftermarket magazine-extension setup.

That makes it a practical supporting component for both new installations and existing shotgun upgrades.

Designed for Compatible Shotgun Configurations

The ATI Shotgun Mag Clamp is intended for shotgun setups where the barrel and magazine tube dimensions are compatible with the clamp.

Because barrel profiles, magazine tubes and extension systems can vary between shotgun models, always review the ATI Fitment tab before ordering.

The ATI Advantage

ATI offers more than major shotgun stocks and forends — the supporting hardware matters too.

The Shotgun Mag Clamp provides a simple, compact and dependable way to reinforce compatible magazine-extension systems, helping create a more secure and properly supported shotgun setup.

Reviews (24)

24 reviews for Shotgun Mag Clamp

4.8
Based on 24 reviews
5
83
83%
4
12
12%
3
4
4%
2
0%
1
0%
1-5 of 24 reviews
  1. Works great. Used it to attach a flashlight on my Mossburg 500 pump shotgun.

  2. Great product worked beautifully

  3. I was missing parts on my order so I contacted customer service and they sent it the missing parts right away… You dont see this kind of customer service anymore… and d price was fair!!!

  4. Nice item

  5. Easy product

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Accessories

Accessories

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Instructions

Instructions

Shipping and Delivery

Fast & Reliable Shipping

ATI Outdoors ships orders quickly using UPS, FedEx, and USPS Priority Mail, depending on the items purchased.

Shipping Details

  • Most orders ship within 24-48 hours or less.
  • Many orders ship the next business day, Monday through Friday.
  • Backordered items ship as soon as they become available.

We currently ship within the United States, including Alaska and Hawaii at increased rates. ATI does not ship online orders internationally.

California notice: Due to California Bill AB1263, we are unable to sell or ship to California as of 01/01/26.