Stuck at home on a rainy day with a cold. Decided to study a few differences between G44 and other Glocks. Glock hasn’t incorporated any G44 training into their Advanced Armorer class yet, because my buddy took it just last week. So unique design features is something we’ll have to figure out on our own for now. I’ll post a few observations and pictures. Welcome others to contribute to the thread as all these little details are noticed. Perhaps the most interesting feature to me is the Firing Pin Assembly. Here it is next to a Gen 3 FP assembly. A few things jump out. White spring cups. I can’t tell any difference between them; the G44 cups seem to fit a Gen 3 channel liner just fine. Perhaps they just left the black dye out for a quick visual differentiator from Centerfire FP assemblies. It appears to use same FP spring as all other Glocks, and I can’t help but think the assembly was intentionally designed around maintaining this single spring. You’ll notice the G44 spring is more compressed, storing more energy, in its resting state. The FP lug is also kicked forward; a design departure from all previous Glocks. Just from dry-fire and playing with the slide, it’s apparent that the FP travels shorter than other Glocks. Makes for a nice, crisp trigger with a short reset. I have to think it was also designed to balance the FP spring tension with the RSA tension. An RSA that lite in a traditional Glock firing mechanism with OE FP spring can theoretically cause some bad things to happen. For whatever reason, it appears that Glock did the opposite of prior Glocks (excluding slim lines). They have a plastic slide and metal channel liner. Maybe the liner is connected to the breach face, the rails, and where the metal skeleton crosses over on top of the slide FP safety and it’s home in the slide are different than prior Glocks. I don’t fully understand why. I know you have to do a little wiggling to take it out, and remember the point bottom hook goes toward the outside of the slide during reinstallation. One of the weirdest things I noticed was a metal extractor riding in a polymer slide. Perhaps the extractor has been designed to reduce friction on the polymer flats. I know my 17.3 MIM extractor will get galling from carbon buildup against a metal slide if I go several K rounds without cleaning. I’m cool with that, but would worry if the polymer slide started to wear here. Hopefully that will be a non-issue and I’m overlooking some engineering voodoo few more pics and I’ll quit rambling.