People search for this one a lot, so here is the straight answer before anything else: the forced reset trigger kit does not fit the Glock 44. The 44 looks like a Glock 19, but inside it is a different pistol.
The Glock 44 is a .22 LR rimfire built on a hybrid polymer-and-steel slide that works by simple blowback. It is not a scaled-down 19. The fire control parts are specific to the 44, and the trigger bar, connector and reset geometry are not the centrefire Glock parts the FRT kit is built around. A forced reset trigger relies on the slide driving the reset with centrefire slide mass and timing - a rimfire blowback slide does not do that.
Fitting a kit that was not made for the 44 is not a tuning problem you can spring your way out of. We would rather lose the sale than sell you a part that does not belong in your pistol.
The centrefire models that use the standard Glock trigger assembly:
The full list by platform is on the triggers by platform page.
A .22 is the cheapest way to shoot a lot, which is usually the real reason people ask this. The honest options for the 44 are a lighter connector and a smooth trigger job - standard parts, no forced reset. Anything that claims to force the reset on a rimfire Glock should make you suspicious about what else it claims.
Not one we would sell. The 44's fire control is its own design, and we have not seen a forced reset kit for it that we would put in our own pistol.
No. This is not a fitting issue you can file your way past - the parts and the timing are different.
Those are slimline 9mm pistols with their own trigger parts, and the standard kit is not made for them either. Ask us before ordering and we will tell you straight.