5KU "EX" Style Competition CNC Trigger for Elite Force Glock Gas Blowback Pistols
(Color: Dark Earth-Black)

"Does not fit Elite Force Glock 19x, the overall width is larger. not worth as return, was able to make it fit with a small bit of filing. Looking at my 17 gen 4 it will fit fine as it is smaller in width. Give 5 stars as it is good quality and partly my mistake but I feel description should read DOES NOT FIT 19X

"Can confirm it will fit 34gen4 but the trigger needs its top hole to be hollowed out a bit and the screw needs to be replaced with the pin for the trigger to move freely with the trigger release. May also have to widen the opening for better play on the trigger. Other than that it works good. Just know there will definitely be modification required for any gen 4 Glock

"Does not fit G17 Gen5
Description needs to clarify this.