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Questions & Answers
Customer Reviews
Helpful Negative Review Extended mag release portion too skinny by Chris M, May 28, 2024
The portion of the mag release that extends out further but doesn't maintain the buttons contact with the frame through the full push so the button slides to the rear of the gun when not depressed and causes inconsistent behavior of the mag release w...
Read More...
1/1 found this helpful
Most Recent Reviews mag release by Goose, Verified Owner, September 4, 2025
Got this for my Glock 17 clone I’m building. No complaints.
Read All 2 Reviews

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Product Info for Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5

The Centennial Defense Systems extended magazine release is machined from high quality 6061 aluminum and allows for easier and faster mag swaps. It is designed to fit in most holsters and will fit Gen 4-5 Glock models in 9mm, .40 S&W, .357 Sig. Included with the magazine release is our stainless steel mag catch spring available in the stock 5lb or reduced 2.5lb weight. The reduced 2.5lb spring cuts the weight in half for quicker mag drops and less resistance during magazine swaps.image

Note: Will NOT fit G42, G43 or Gen 1-3 pistols.

Specifications for Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5:

Manufacturer: Centennial Defense Systems
Gun Make: Glock
Gun Model: Glock 25, Glock 35, Glock 34, Glock 24, Glock 22, Glock 17, Glock 33, Glock 27, Glock 26, Glock 32, Glock 31, Glock 23, Glock 19
Fabric/Material: 6061 Aluminum

Package Contents:

  • Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5

Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 Orderable Models

List of Orderable Models

Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Gold, 20699 , MPN: 20699 , UPC: 713310805868 , Code: 50O-EMR-CD19-20699
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Purple, 20674 , MPN: 20674 , UPC: 713310805615 , Code: 50O-EMR-CD19-20674
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Burnt Bronze, 20666 , MPN: 20666 , UPC: 713310805530 , Code: 50O-EMR-CD19-20666
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, OD Green, 20672 , MPN: 20672 , UPC: 713310805592 , Code: 50O-EMR-CD19-20672
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Satin Aluminum, 20676 , MPN: 20676 , UPC: 713310805639 , Code: 50O-EMR-CD19-20676
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Black, 20649 , MPN: 20649 , UPC: 713310805363 , Code: 50O-EMR-CD19-20649
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Nickel, 20671 , MPN: 20671 , UPC: 713310805585 , Code: 50O-EMR-CD19-20671
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Red, 20675 , MPN: 20675 , UPC: 713310805622 , Code: 50O-EMR-CD19-20675
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Red, 20690 , MPN: 20690 , UPC: 713310805776 , Code: 50O-EMR-CD19-20690
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, White, 20707 , MPN: 20707 , UPC: 713310805943 , Code: 50O-EMR-CD19-20707
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Black, 20664 , MPN: 20664 , UPC: 713310805516 , Code: 50O-EMR-CD19-20664
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Blue, 20695 , MPN: 20695 , UPC: 713310805820 , Code: 50O-EMR-CD19-20695
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Blue, 20650 , MPN: 20650 , UPC: 713310805370 , Code: 50O-EMR-CD19-20650
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Glock Gray, 20652 , MPN: 20652 , UPC: 713310805394 , Code: 50O-EMR-CD19-20652
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Glock Gray, 20682 , MPN: 20682 , UPC: 713310805691 , Code: 50O-EMR-CD19-20682
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Zombie Green, 20708 , MPN: 20708 , UPC: 713310805950 , Code: 50O-EMR-CD19-20708
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Zombie Green, 20693 , MPN: 20693 , UPC: 713310805806 , Code: 50O-EMR-CD19-20693
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, OD Green, 20702 , MPN: 20702 , UPC: 713310805899 , Code: 50O-EMR-CD19-20702
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Blue, 20665 , MPN: 20665 , UPC: 713310805523 , Code: 50O-EMR-CD19-20665
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Gold, 20684 , MPN: 20684 , UPC: 713310805714 , Code: 50O-EMR-CD19-20684
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Hi-Viz Orange, 20670 , MPN: 20670 , UPC: 713310805578 , Code: 50O-EMR-CD19-20670
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Purple, 20704 , MPN: 20704 , UPC: 713310805912 , Code: 50O-EMR-CD19-20704
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Nickel, 20686 , MPN: 20686 , UPC: 713310805738 , Code: 50O-EMR-CD19-20686
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Satin Aluminum, 20691 , MPN: 20691 , UPC: 713310805783 , Code: 50O-EMR-CD19-20691
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Satin Aluminum, 20706 , MPN: 20706 , UPC: 713310805936 , Code: 50O-EMR-CD19-20706
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Glock Tan, 20653 , MPN: 20653 , UPC: 713310805400 , Code: 50O-EMR-CD19-20653
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Zombie Green, 20678 , MPN: 20678 , UPC: 713310805653 , Code: 50O-EMR-CD19-20678
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Black, 20679 , MPN: 20679 , UPC: 713310805660 , Code: 50O-EMR-CD19-20679
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Black, 20694 , MPN: 20694 , UPC: 713310805813 , Code: 50O-EMR-CD19-20694
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Pink, 20673 , MPN: 20673 , UPC: 713310805608 , Code: 50O-EMR-CD19-20673
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Satin Aluminum, 20661 , MPN: 20661 , UPC: 713310805486 , Code: 50O-EMR-CD19-20661
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Blue, 20680 , MPN: 20680 , UPC: 713310805677 , Code: 50O-EMR-CD19-20680
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Hi-Viz Orange, 20685 , MPN: 20685 , UPC: 713310805721 , Code: 50O-EMR-CD19-20685
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, OD Green, 20657 , MPN: 20657 , UPC: 713310805448 , Code: 50O-EMR-CD19-20657
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Glock Tan, 20683 , MPN: 20683 , UPC: 713310805707 , Code: 50O-EMR-CD19-20683
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Nickel, 20656 , MPN: 20656 , UPC: 713310805431 , Code: 50O-EMR-CD19-20656
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Purple, 20689 , MPN: 20689 , UPC: 713310805769 , Code: 50O-EMR-CD19-20689
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Burnt Bronze, 20696 , MPN: 20696 , UPC: 713310805837 , Code: 50O-EMR-CD19-20696
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Burnt Bronze, 20651 , MPN: 20651 , UPC: 713310805387 , Code: 50O-EMR-CD19-20651
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Glock Tan, 20698 , MPN: 20698 , UPC: 713310805851 , Code: 50O-EMR-CD19-20698
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, White, 20692 , MPN: 20692 , UPC: 713310805790 , Code: 50O-EMR-CD19-20692
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Pink, 20658 , MPN: 20658 , UPC: 713310805455 , Code: 50O-EMR-CD19-20658
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Burnt Bronze, 20681 , MPN: 20681 , UPC: 713310805684 , Code: 50O-EMR-CD19-20681
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, White, 20662 , MPN: 20662 , UPC: 713310805493 , Code: 50O-EMR-CD19-20662
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Purple, 20659 , MPN: 20659 , UPC: 713310805462 , Code: 50O-EMR-CD19-20659
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Glock Gray, 20697 , MPN: 20697 , UPC: 713310805844 , Code: 50O-EMR-CD19-20697
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Red, 20705 , MPN: 20705 , UPC: 713310805929 , Code: 50O-EMR-CD19-20705
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Hi-Viz Orange, 20655 , MPN: 20655 , UPC: 713310805424 , Code: 50O-EMR-CD19-20655
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Pink, 20703 , MPN: 20703 , UPC: 713310805905 , Code: 50O-EMR-CD19-20703
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, Pink, 20688 , MPN: 20688 , UPC: 713310805752 , Code: 50O-EMR-CD19-20688
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Hi-Viz Orange, 20700 , MPN: 20700 , UPC: 713310805875 , Code: 50O-EMR-CD19-20700
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Serrated, OD Green, 20687 , MPN: 20687 , UPC: 713310805745 , Code: 50O-EMR-CD19-20687
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Gold, 20669 , MPN: 20669 , UPC: 713310805561 , Code: 50O-EMR-CD19-20669
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Gold, 20654 , MPN: 20654 , UPC: 713310805417 , Code: 50O-EMR-CD19-20654
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Zombie Green, 20663 , MPN: 20663 , UPC: 713310805509 , Code: 50O-EMR-CD19-20663
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 10mm, .45ACP Glock, Stippled, Nickel, 20701 , MPN: 20701 , UPC: 713310805882 , Code: 50O-EMR-CD19-20701
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Glock Gray, 20667 , MPN: 20667 , UPC: 713310805547 , Code: 50O-EMR-CD19-20667
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, Glock Tan, 20668 , MPN: 20668 , UPC: 713310805554 , Code: 50O-EMR-CD19-20668

Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 Unavailable & Discontinued Models

List of Unorderable Models

Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Stippled, White, 20677 , MPN: 20677 , UPC: 713310805646 , Code: 50O-EMR-CD19-20677
Centennial Defense Systems Extended Mag Release w/5lb Spring for Gen 4-5 9mm, .40S&W, .357SIG Glock, Serrated, Red, 20660 , MPN: 20660 , UPC: 713310805479 , Code: 50O-EMR-CD19-20660
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