GG&G +3 Magazine Tube Extension for Remington 870 – Black, Durable
Boost Capacity. Stay Tactical. Built for the Fight.
Whether you’re preparing for patrol, building a home defense rig, or enhancing your competition-ready Remington 870, the GG&G +3 Magazine Tube Extension delivers the added firepower and rugged dependability you need. Engineered from 6061-T6 aluminum and backed by tactical-grade quality, this +3 extension adds three extra shells to your 12-gauge Remington 870, 1100, or 11-87, extending your shotgun’s effectiveness when it matters most.
Ideal for law enforcement, military, and home defense applications, this tube features a ratcheting steel base, secure barrel retention under recoil, and a removable end cap for easy maintenance.
Key Features
+3 Capacity for 12-Gauge Remington Shotguns
Increases your shotgun’s magazine by three rounds—perfect for defense, competition, or tactical roles.Compatible with Remington 870, 1100, and 11-87
Precision-fit for 12-gauge models only. Designed to work without modification to your shotgun.Durable 6061-T6 Aluminum Construction
Lightweight but battle-tough, finished in matte black for a non-reflective, corrosion-resistant profile.Ratcheting Steel Base
Secures the barrel under recoil, maintaining zero movement and consistent performance.Removable End Cap
Facilitates fast cleaning and lets you easily insert a mag plug if needed.Includes Extra-Length Magazine Spring
Ensures consistent feeding and reliable cycling—every shot, every time.Protrudes ~2.25” Past 18.5" Barrel
Offers a flush-to-slightly extended look on most tactical-length barrels.
Compatibility
✅ Remington 870 (12 Gauge)
✅ Remington 1100 (12 Gauge)
✅ Remington 11-87 (12 Gauge)
⚠️ Not compatible with 20-gauge or other brands/models.
Maintenance Tip
Due to its position beyond the muzzle, the extension tube may show carbon buildup or finish discoloration over time—especially with ported chokes. This is cosmetic and does not affect function. GG&G does not warranty finish wear caused by muzzle blast.
Product Specifications
| Feature | Detail |
|---|---|
| Model | GG&G +3 Magazine Extension – GGG-1546-3 |
| Capacity | Adds 3 Rounds (12 Gauge) |
| Material | 6061-T6 Aluminum / Steel Base |
| Finish | Matte Black Hardcoat |
| Compatibility | Remington 870, 1100, 11-87 (12 Gauge) |
| Length Extension | Approx. 2.25" beyond 18.5" barrel |
| Spring Included | Yes – Extended Magazine Spring |
| End Cap | Removable for cleaning & plugs |
| Follower | Compatible with factory or GG&G options |
Why Choose GG&G?
With decades of service-tested innovation, GG&G is a trusted name among military, LE, and 3-Gun communities. Their Remington 870 +3 Magazine Tube Extension is engineered to meet high-stress demands—no frills, no failure.
WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to – www.P65Warnings.ca.gov.
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