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Remington 870 Magazine Extensions – Nordic & GG&G Kits | MSP
Remington 870 Magazine Extensions – Boost Capacity & Tactical Utility
🔧 Extend Your 870’s Firepower with Precision-Fit Magazine Extensions
The Remington 870 is a legendary pump-action shotgun, but its stock capacity can be limiting — especially in tactical, home defense, and competition settings. That’s where a Remington 870 magazine extension comes in.
At Mounts Plus, we stock high-performance magazine extensions from Nordic Components, GG&G, and other trusted brands. Whether you need a +2 for compact defense or a +9 round tube for 3-gun competition, we’ve got the right kit for your 12-gauge Remington 870.
🔥 Top-Selling 870 Magazine Extensions
| Product | Capacity | Brand | Key Features |
|---|---|---|---|
| Nordic Components MXT +5 Kit | 5 | Nordic Components | Lightweight, modular, anodized |
| GG&G 870 2-Shot Extension | 2 | GG&G | Heavy-duty steel, matte finish |
| Nordic MXT +9 Magazine Tube (12GA) | 9 | Nordic Components | Competition-length, needs nut |
| Nordic +3 Extension with Clamp Option | 3 | Nordic Components | Clamp-compatible, low-profile |
💡 Many kits require an extension nut specific to your shotgun model. Be sure to select the correct one for Remington 870 compatibility.
✅ Why Add a Magazine Extension to Your Remington 870?
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🔩 Increased Capacity – Add 2 to 9 extra shells for longer engagements
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🧰 Easy Installation – Most kits are drop-in and include spring, follower, and tube
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🧱 Built for Duty – Made from anodized aluminum or steel to withstand recoil & abuse
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🏆 Competition-Ready – Used in 3-Gun, IPSC, and tactical training setups
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🔧 Modular Design – Pair with clamps, sling mounts, and QD accessories
🧠 Frequently Asked Questions
Q: What size extension should I choose?
A: It depends on your barrel length and use case. A +2 or +3 is great for home defense; +5 to +9 are ideal for competition or tactical.
Q: Are these extensions compatible with all 870 models?
A: Yes, as long as you're using a 12-gauge Remington 870 with a standard magazine tube. Tactical and Police models are fully supported.
Q: What’s included in a magazine extension kit?
A: Most kits include the extension tube, extended spring, and follower. Some also include a barrel clamp for stabilization.
Q: Do I need to modify my shotgun?
A: Most Remington 870s made after 1990 have dimples in the magazine tube that must be removed before installation. This is an easy DIY process.
Q: Is a barrel clamp necessary?
A: A clamp is recommended for extensions longer than +4 to prevent movement under recoil and provide a mounting point for accessories.
🛒 Shop by Use Case
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🏠 Home Defense – GG&G +2 or Nordic +3
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🎯 3-Gun Competition – Nordic +5 to +9 MXT Kits
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🧰 Tactical Builds – Nordic +4 with QD Clamp
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🧱 Law Enforcement & Patrol – GG&G steel +3 or +4 kits
🔗 Related Accessories
🚀 Load More, Reload Less — Build a Better 870
When you’re running a shotgun in the field, on the range, or for home defense, every shell counts. A Remington 870 magazine extension gives you faster follow-ups, fewer reloads, and a more capable, purpose-built shotgun.
🛒 Browse our full selection of 870 magazine extensions — in stock and shipping fast from Mounts Plus. Need help choosing? Our experts are here to assist.