[Single] Baseplate Glock Magazine +3 Extension — Fits OEM 9mm Factory Mags

Upgrade your Glock magazine with this precision-engineered +3 extension, designed for OEM Glock 9mm magazines. Compatible with Glock 17, 19, and 45 models, it increases capacity while improving grip and maintaining a clean, factory-style appearance.

Constructed from durable carbon fiber–reinforced polymer, this extension delivers reliable performance and long-lasting strength. Installation is quick and straightforward, making it an easy upgrade for range or training use.

Fitment Note: Based on customer feedback, this extension does not fit Glock 17 magazines designed for the 19X.

Key Features

• +3 Capacity Increase for extended shooting sessions
• OEM Fitment for Glock 17, 19, and 45 factory 9mm magazines
• Durable Construction using PETG carbon fiber material
• Tool-Free Installation — quick and simple setup
• Clean, Low-Profile Design in Black or Gray carbon fiber

Compatibility

• Fits: OEM Glock 9mm magazines (G17 / G19 / G45)
• Does NOT fit: Glock 17 magazines made for the 19X
• Note: Fitment with aftermarket or non-OEM magazines is not guaranteed

What’s Included

• (1) +3 Magazine Extension

Specifications

• Condition: New (inspected prior to shipping)
• Caliber: 9mm
• Type: Magazine Baseplate Extension
• Material: PETG Carbon Fiber
• Color Options: Black or Gray
• Pack Size: 1
• Manufacturer: Independent small-batch maker

Shipping & Returns

• Shipping: U.S. only (tracking included)
• Processing Time: Ships within 2 business days after payment clears
• Expedited Shipping: Available at checkout
• Returns: Accepted within 14 days (unused, original condition)
• Damaged/Defective Items: Covered for 30 days — replacement provided at no cost

Legal & Compliance Notice

Magazine capacity and firearm accessory laws vary by location. It is the buyer’s responsibility to ensure compliance with all applicable laws before purchasing, possessing, or using this product.

Orders will not be shipped to locations where prohibited. By purchasing, you confirm that you are legally permitted to own and use this item in your jurisdiction.

Restricted / Regulated Areas (Capacity Limits Apply)

• 10-round limits (or similar): CA, CT, HI (handguns), MD, MA, NJ, NY, RI, VT, Washington D.C.
• Additional restrictions:
  • CO — 15-round limit
  • DE — 17-round limit
  • IL — 10/15-round limits (varies by locality)
  • OR — 10-round limit (subject to legal changes)
  • WA — 10-round limit (possession of older mags may be allowed)

Laws change frequently—always verify your local regulations before purchasing.

Important Notes

• This listing is for an accessory only — no firearm or functional firearm components are included
• Buyer is responsible for legal compliance prior to installation or use