There are two distinct distances between GLOCK's OEM Trigger Pin and the slide lock. These vary between the legacy "long" Gen 1-4 Competition/Standard models (pictured in red below) and the "short" Gen 1-5 (CURRENTLY COMPATIBLE) Compact/Sub-Compacts (in green). Gen 5 pattern (with ambi-slide stops) universally switched to the same "shortened" distance for expanded compatibility (Excludes Slimline models).
Glock platform pistols that maintain this specification are also compatible, such as Shadow Systems, SCT, Nomad Defense, PSA (Palmetto State Armory) Dagger, Lone Wolf's compact DUSK19 & LTD19 v1/v2, Stoeger STR-9 series (excluding MC), Glockstore GSX100, ZRODelta ONE and more... (Shadow Systems MR series are a normal fit, while XR and DR series are a "hair" farther apart creating a tighter press-fit). Polymer80 not compatible.
The Align Tactical® THUMB REST TRIGGER PIN is compatible with GLOCK® GEN 5 Competition & Standard models (34,17,20,21,22) and ALL GEN (19, 19X,23,25,26,27,28,29,30,32,33,38,39,44,45,47) pistols and select compatible clones (Shadow Systems, SCT, Nomad Defense, PSA (Palmetto State Armory) Dagger, Lone Wolf's compact DUSK19 & LTD19 v1/v2, Stoeger STR-9 series double-stacks, GSX100, ZRODelta ONE, and more). Hardened S7 tool steel part finished in Black Nitride. Approved for USPSA Limited Optics, Limited 10, Limited, and Open. Made in USA with lifetime warranty.
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