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Questions & Answers
Customer Reviews
Most Recent Reviews Excellent Mag Release by Tim, Verified Owner, July 29, 2025
Very easy install and perfect fit on my Glock 19 Gen 2.
Most Recent Reviews Centennial Mag Release by Steve, Verified Owner, May 1, 2025
Does not fit the Glock 21SF. The round inside radius causes the magazine not to go all the way in. They need to fix this.
Most Recent Reviews Good Product! by Dale, Verified Owner, September 19, 2024
I like it! Especially for the PSA Dagger. I've bought other extended mag releases only to find they stick out too far and fit loosely in the frame. This one seems much better and secure. I can pull pretty hard on the mag. and it won't come out. Y...
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Read All 3 Reviews

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Product Info for Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3

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 1-3 Glock models in 9mm, .40 S&W, .357 Sig, 10mm and .45ACP. 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 4/5.

Specifications for Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3:

Manufacturer: Centennial Defense Systems
Gun Make: Glock
Gun Model: Glock 29, Glock 33, Glock 27, Glock 26, Glock 32, Glock 31, Glock 23, Glock 20, Glock 19, Glock 30, Glock 21, Glock 25, Glock 20SF, Glock 21SF, Glock 30S, Glock 35, Glock 34, Glock 24, Glock 22, Glock 17
Model Generation: 3, 2, 1
Fabric/Material: 6061 Aluminum
Condition: New

Package Contents:

  • Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3

Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 Orderable Models

List of Orderable Models

Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Black, 20604 , MPN: 20604 , UPC: 713310804915 , Code: 50O-EMR-CD16-20604
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Nickel, 20611 , MPN: 20611 , UPC: 713310804984 , Code: 50O-EMR-CD16-20611
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Burnt Bronze, 20621 , MPN: 20621 , UPC: 713310805080 , Code: 50O-EMR-CD16-20621
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Black, 20589 , MPN: 20589 , UPC: 713310804762 , Code: 50O-EMR-CD16-20589
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Gold, 20624 , MPN: 20624 , UPC: 713310805110 , Code: 50O-EMR-CD16-20624
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, OD Green, 20597 , MPN: 20597 , UPC: 713310804847 , Code: 50O-EMR-CD16-20597
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Glock Tan, 20608 , MPN: 20608 , UPC: 713310804953 , Code: 50O-EMR-CD16-20608
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Glock Tan, 20638 , MPN: 20638 , UPC: 713310805257 , Code: 50O-EMR-CD16-20638
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Blue, 20635 , MPN: 20635 , UPC: 713310805226 , Code: 50O-EMR-CD16-20635
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Satin Aluminum, 20601 , MPN: 20601 , UPC: 713310804885 , Code: 50O-EMR-CD16-20601
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Purple, 20614 , MPN: 20614 , UPC: 713310805011 , Code: 50O-EMR-CD16-20614
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Black, 20634 , MPN: 20634 , UPC: 713310805219 , Code: 50O-EMR-CD16-20634
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Gold, 20594 , MPN: 20594 , UPC: 713310804816 , Code: 50O-EMR-CD16-20594
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Pink, 20613 , MPN: 20613 , UPC: 713310805004 , Code: 50O-EMR-CD16-20613
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Gold, 20639 , MPN: 20639 , UPC: 713310805264 , Code: 50O-EMR-CD16-20639
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Hi-Viz Orange, 20610 , MPN: 20610 , UPC: 713310804977 , Code: 50O-EMR-CD16-20610
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Burnt Bronze, 20606 , MPN: 20606 , UPC: 713310804939 , Code: 50O-EMR-CD16-20606
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Blue, 20590 , MPN: 20590 , UPC: 713310804779 , Code: 50O-EMR-CD16-20590
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Blue, 20605 , MPN: 20605 , UPC: 713310804922 , Code: 50O-EMR-CD16-20605
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, White, 20647 , MPN: 20647 , UPC: 713310805349 , Code: 50O-EMR-CD16-20647
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Zombie Green, 20618 , MPN: 20618 , UPC: 713310805059 , Code: 50O-EMR-CD16-20618
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Red, 20615 , MPN: 20615 , UPC: 713310805028 , Code: 50O-EMR-CD16-20615
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Nickel, 20641 , MPN: 20641 , UPC: 713310805288 , Code: 50O-EMR-CD16-20641
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Satin Aluminum, 20631 , MPN: 20631 , UPC: 713310805189 , Code: 50O-EMR-CD16-20631
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Zombie Green, 20648 , MPN: 20648 , UPC: 713310805356 , Code: 50O-EMR-CD16-20648
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Hi-Viz Orange, 20595 , MPN: 20595 , UPC: 713310804823 , Code: 50O-EMR-CD16-20595
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Red, 20630 , MPN: 20630 , UPC: 713310805172 , Code: 50O-EMR-CD16-20630
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Glock Gray, 20592 , MPN: 20592 , UPC: 713310804793 , Code: 50O-EMR-CD16-20592
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, White, 20602 , MPN: 20602 , UPC: 713310804892 , Code: 50O-EMR-CD16-20602
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Black, 20619 , MPN: 20619 , UPC: 713310805066 , Code: 50O-EMR-CD16-20619
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Satin Aluminum, 20616 , MPN: 20616 , UPC: 713310805035 , Code: 50O-EMR-CD16-20616
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, OD Green, 20642 , MPN: 20642 , UPC: 713310805295 , Code: 50O-EMR-CD16-20642
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Purple, 20644 , MPN: 20644 , UPC: 713310805318 , Code: 50O-EMR-CD16-20644
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Zombie Green, 20603 , MPN: 20603 , UPC: 713310804908 , Code: 50O-EMR-CD16-20603
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Burnt Bronze, 20636 , MPN: 20636 , UPC: 713310805233 , Code: 50O-EMR-CD16-20636
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Hi-Viz Orange, 20625 , MPN: 20625 , UPC: 713310805127 , Code: 50O-EMR-CD16-20625
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Glock Gray, 20607 , MPN: 20607 , UPC: 713310804946 , Code: 50O-EMR-CD16-20607
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Glock Gray, 20637 , MPN: 20637 , UPC: 713310805240 , Code: 50O-EMR-CD16-20637
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Glock Tan, 20593 , MPN: 20593 , UPC: 713310804809 , Code: 50O-EMR-CD16-20593
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Nickel, 20596 , MPN: 20596 , UPC: 713310804830 , Code: 50O-EMR-CD16-20596
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, OD Green, 20612 , MPN: 20612 , UPC: 713310804991 , Code: 50O-EMR-CD16-20612
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Glock Tan, 20623 , MPN: 20623 , UPC: 713310805103 , Code: 50O-EMR-CD16-20623
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Glock Gray, 20622 , MPN: 20622 , UPC: 713310805097 , Code: 50O-EMR-CD16-20622
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Purple, 20629 , MPN: 20629 , UPC: 713310805165 , Code: 50O-EMR-CD16-20629
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, White, 20617 , MPN: 20617 , UPC: 713310805042 , Code: 50O-EMR-CD16-20617
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Pink, 20598 , MPN: 20598 , UPC: 713310804854 , Code: 50O-EMR-CD16-20598
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Blue, 20620 , MPN: 20620 , UPC: 713310805073 , Code: 50O-EMR-CD16-20620
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Purple, 20599 , MPN: 20599 , UPC: 713310804861 , Code: 50O-EMR-CD16-20599
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Zombie Green, 20633 , MPN: 20633 , UPC: 713310805202 , Code: 50O-EMR-CD16-20633
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Burnt Bronze, 20591 , MPN: 20591 , UPC: 713310804786 , Code: 50O-EMR-CD16-20591
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Nickel, 20626 , MPN: 20626 , UPC: 713310805134 , Code: 50O-EMR-CD16-20626
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Red, 20645 , MPN: 20645 , UPC: 713310805325 , Code: 50O-EMR-CD16-20645
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Satin Aluminum, 20646 , MPN: 20646 , UPC: 713310805332 , Code: 50O-EMR-CD16-20646
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Serrated, Red, 20600 , MPN: 20600 , UPC: 713310804878 , Code: 50O-EMR-CD16-20600
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Hi-Viz Orange, 20640 , MPN: 20640 , UPC: 713310805271 , Code: 50O-EMR-CD16-20640
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, Pink, 20643 , MPN: 20643 , UPC: 713310805301 , Code: 50O-EMR-CD16-20643
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, OD Green, 20627 , MPN: 20627 , UPC: 713310805141 , Code: 50O-EMR-CD16-20627
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, White, 20632 , MPN: 20632 , UPC: 713310805196 , Code: 50O-EMR-CD16-20632
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Serrated, Pink, 20628 , MPN: 20628 , UPC: 713310805158 , Code: 50O-EMR-CD16-20628
Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Gold, 20609 , MPN: 20609 , UPC: 713310804960 , Code: 50O-EMR-CD16-20609

Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 Unavailable & Discontinued Models

List of Unorderable Models

USED Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 10mm, .45ACP Glock, Stippled, White, 20647, EDEMO1, Used, Condition Fair, Installed/Mounted , MPN: 20647-EDEMO1 , Code: 50O-EMR-CD16-20647-EDEMO-IN-D
USED Centennial Defense Systems Extended Mag Release w/2.5lb Spring for Gen 1-3 9mm, .40S&W, .357SIG Glock, Stippled, Satin Aluminum, 20616, EDEMO1, Used, Condition Fair, Scratches , MPN: 20616-EDEMO1 , Code: 50O-EMR-CD16-20616-EDEMO-SC-D
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