This Carlson’s magazine extension (mfr. part no. 04505) adds 8 rounds of capacity to a 12-gauge Winchester SX3, SX4, SX2, or Browning Gold/Silver shotgun.

Key Specifications

• Adds 8 rounds to your shotgun’s magazine capacity.
• Chambered for 12-gauge shells.
• Fits the Winchester SX3, SX4, SX2, and Browning Gold/Silver.
• Constructed of blued solid steel.
• Includes a spring.
• Includes a base clamp with swivel stud (works with a QD sling swivel, sold separately).
• Includes a high-visibility follower.
• Threaded tube design replaces the factory magazine cap.
• Overall length of approximately 12.15 inches.
• Manufactured by Carlsons.

Frequently Asked Questions

Will this fit a Browning Gold?

Yes, it’s built to fit the Winchester SX3, SX4, SX2, and Browning Gold/Silver.

How many rounds does this extension add?

8 rounds, on top of your shotgun’s factory capacity.

Buy the Carlson’s Winchester SX3 Magazine Extension

Shop the Carlsons lineup or browse our full Shotgun Magazines selection to find the right fit for your firearm.