Description

Used Glock 20/40 10mm Factory 15 Round Magazine

Used Glock 20/40 10mm Factory 15 Round Magazine

A Used Glock 20/40 10mm Factory 15-Round Magazine is an original equipment manufacturer (OEM) magazine made by Glock for the Glock 20 and Glock 40 pistols chambered in 10mm Auto. Buying a used OEM magazine is often a cost-effective option because factory Glock magazines are widely regarded as the most reliable choice for these pistols.

Overview

Compatibility

This magazine is designed to fit:

• Glock 20 (all generations)
• Glock 20SF
• Glock 20 Gen4
• Glock 20 Gen5
• Glock 40 Gen4 MOS

It also fits Glock 29 pistols but extends below the grip because the Glock 29 is the compact model.

Construction

Glock factory magazines feature:

• Impact-resistant polymer outer body
• Full-length steel reinforcement liner
• Corrosion-resistant steel spring
• Polymer follower engineered specifically for 10mm cartridges
• Removable floorplate for cleaning and maintenance

This design contributes to the durability and feeding reliability for which Glock magazines are known.

Used Magazine Condition

A used factory magazine may show:

• Light scratches from insertion and removal
• Finish wear on the floorplate
• Minor cosmetic marks
• Some wear on the follower

It should not have:

• Cracked feed lips
• Damaged floorplate
• Rusted spring
• Bent steel liner
• Cracks in the polymer body

Reliability

OEM Glock magazines are generally consider the benchmark for reliability. Compare with many aftermarket magazines, Glock factory magazines are more consistently recommended by owners for defensive use, while aftermarket options can have more mixed reports.

Maintenance

A used magazine can often be restored to excellent working condition by:

• Disassembling and cleaning the inside
• Removing dirt and debris
• Inspecting the spring for corrosion or deformation
• Replacing the spring or follower if heavily worn (factory replacement parts are available)

Typical Dimensions

• Capacity: 15 rounds
• Cartridge: 10mm Auto
• Weight (empty): approximately 3–4 oz (85–115 g)
• Double-stack design

Current Market Value

Typical U.S. prices are approximately:

• Used: $18–30 USD
• Excellent used: $25–35 USD
• New OEM: $30–40 USD

Prices vary depending on condition and local availability.

Advantages

• Genuine Glock factory part
• Excellent reliability and durability
• Steel-reinforced construction
• Easy to disassemble for cleaning
• Compatible across Glock 20 and Glock 40 models
• Long service life with proper maintenance

What to Check Before Buying Used

• Feed lips are not chip or crack.
• Follower moves smoothly.
• Spring provides strong upward pressure.
• Magazine locks securely into the pistol.
• Floorplate is intact and firmly attached.
• No excessive rust or damage to internal components.

For shooters using a Glock 20 or Glock 40, a used OEM 15-round magazine is generally a dependable option if it passes these basic inspections, and many owners prefer factory magazines over aftermarket alternatives for reliability.