Magazine Fit

Proper magazine fitment is crucial for the reliable operation of your firearm. Ensuring that your magazines are compatible and correctly seated can prevent many common issues. This guide provides a step-by-step approach to troubleshoot and resolve common magazine-related problems.

Step-by-Step Troubleshooting

1. Verify Magazine Compatibility

• Ensure you are using recommended and compatible magazines. Refer to our list of compatible magazines to avoid any issues.

2. Magazine Not Fully Seated

• Verify Full Insertion: Make sure your magazine is fully inserted. You should hear an audible "click" when it is properly seated.
• Break-In Period: Some magazines may fit more snugly than others due to slight differences in thickness. This is normal and may require a break-in period. Over time, these magazines should fit better.
• Check for Wear Marks: It is normal to see slight wear on the magazine where the polymer contacts the aluminum magazine stop of the receiver. This wear indicates proper engagement and seating of the magazine.

3. Holding the Magazine While Shooting

• Proper Hand Placement: Always place your support hand on the handguard when shooting your firearm to maintain the correct feeding angle as supporting the firearm by the magazine can cause malfunctions.

Glock 33rd 4422-02 Magazine Fitment

Glock 33-round magazines labeled 4422-02 are .010 inches larger than other generation Glock 33-round magazines, preventing them from fully inserting and latching with the magazine catch. To solve for this:

1. Lock the Bolt: Lock the bolt in the rearward position to make it easier to insert and inspect the magazine.
2. Insert Magazine with Snap Cap: Insert the magazine with a snap cap, ensuring it latches. You may need to tilt the magazine slightly forward to help score the magazine stop location.
3. Inspect Scoring: Remove the magazine and look for the scoring above the magazine stop. This indicates where material needs to be removed for a proper fit.
4. Modify Magazine: Using a sharp knife, chisel, or fine sandpaper, remove a small amount of material from the scored area. Go slowly and test fit often to ensure you don't remove too much material. This modification does not negatively impact the function of the magazine in a Glock handgun.

The area circled in red below depicts the marks and where the magazine needs to be sanded down. This modification does not negatively impact the function of the magazine in a Glock handgun.

General Maintenance Tips

• Keep Your Firearm Clean and Lubricated: Regular maintenance ensures reliable operation.
• Consistent Issue Verification: Ensure the problem is not specific to a certain brand, type, or lot of ammunition, or a specific magazine brand or capacity. Identifying consistent patterns can help pinpoint the source of the problem.

By following these steps, you can ensure your magazines fit and function properly, contributing to the overall reliability of your firearm. Happy shooting!