What does a Glock 42 magazine extension do?

A Glock 42 magazine extension increases your firearm's capacity by adding up to 4 additional rounds. It also improves grip control and mag changes, especially for larger hands.

Do I need a new spring with a mag extension?

Most +1 or +2 extensions work with the factory spring. For +4 models, a stronger or longer spring is often included or recommended to maintain reliable feeding.

Are Glock 42 magazine extensions legal?

Yes, in most U.S. states. However, some states restrict total magazine capacity. Check your local laws before purchasing or installing a magazine extension.

Will these extensions fit Glock 43 magazines?

No, Glock 42 and Glock 43 magazines are different sizes and calibers. These extensions are specifically designed for Glock 42 magazines.

Glock 42 Magazine Extension | +1 to +4 Round Mag Extenders | Mounts Plus

Name: Glock 42 Magazine Extension
Brand: FAB Defense
Availability: InStock

**FAB Defense Glock 42 +4 Magazine extension** $23.99

**Tango Down Vckr Tac+2 Bse Plt For G42** $24.60

**Strike Industries Enhncd Mag Plate +2 For G42** $22.45

**Taran Tactical Base Pad for 42 +2 Fb** $32.80

**Pearce Plus-one Ext For Glock 42** $11.21

Glock 42 Magazine Extension – Add Capacity, Control & Confidence

Whether you’re carrying for defense, training at the range, or prepping for competition, a Glock 42 magazine extension is one of the smartest upgrades you can make. Designed to boost your .380 ACP's firepower and handling without sacrificing concealability, these extensions give you more rounds and a better grip—when it matters most.

At Mounts Plus, we stock +1, +2, and +4 magazine extensions from top-tier brands like FAB Defense, Strike Industries, TangoDown, and Pearce, all engineered specifically for the Glock 42.

Why Choose a Magazine Extension for Glock 42?

➕ Increased Round Count – Add +1 to +4 rounds of .380 ACP
✋ Better Grip Control – Ideal for larger hands or enhanced support
⚡ Faster Reloads – Extended baseplates improve indexing & mag changes
🔧 Easy to Install – No gunsmithing required; drop-in fit
💼 Perfect for EDC – Maintain slim profile while boosting capacity

🔥 Our Top Glock 42 Magazine Extensions

Extension Model	Capacity	Material	Key Features
FAB Defense Glock 42 +4 Extension	4	Polymer	Lightweight, tactical-ready design
Strike Industries Enhanced +2 Plate	2	Polymer	Textured, low-profile fit
TangoDown Vickers Tactical +2 Baseplate	2	Polymer	Durable and ergonomic under pressure
TTI Firepower Base Pad +2	2	Aluminum	Premium CNC-machined extension
Pearce Grip +1 Magazine Extension	1	Polymer	Budget-friendly EDC option

🛒 All extensions are Glock 42-specific and tested for feeding reliability and function.

⚠️ Compatibility & Installation

🔫 Fits Glock 42 factory magazines only (not compatible with Glock 43)
🔩 Most +2 to +4 models require removal of OEM baseplate
🔧 Springs included/recommended for some +4 extensions
⏱ Installation takes under 5 minutes with standard Glock tool or punch

💬 Glock 42 Mag Extension – FAQs

Q: What’s the best magazine extension for Glock 42?
A: That depends on your purpose. For max capacity, go with FAB Defense +4. For concealed carry, Pearce or Strike +1/+2 offers balance without adding bulk.

Q: Are these extensions legal in all states?
A: Most states allow them, but states like CA, NY, MA, and NJ may restrict mag capacity. Always check local laws before purchasing.

Q: Do I need a stronger spring with my mag extension?
A: Not for +1/+2 extensions. For +4, we recommend using upgraded or included springs for feeding reliability.

Q: Will these fit Glock 43 magazines?
A: No. Glock 42 and Glock 43 mags are different sizes/calibers. These extensions are Glock 42-only.

🛡️ Why Buy From Mounts Plus?

✅ Factory-authorized brands like FAB Defense & Strike Industries
📦 Fast shipping from our U.S. warehouse
🧠 Expert support from real shooters
💯 100% satisfaction guarantee on all accessories

🛒 Upgrade Your Glock 42 – More Rounds. Better Grip. Tactical Confidence.

Don’t settle for the stock capacity of your Glock 42. Extend your performance with a high-quality magazine extension designed for control, capacity, and carry comfort. Whether you're adding +1 or +4, we've got the gear that gives your Glock 42 the tactical edge.

👉 Shop Glock 42 Magazine Extensions now — in stock & shipping fast.