what parts needed to build kit?

[swatemt]

Hello to all, I recently finished the Glock Armorers Course and was wondering what parts some of you may have stocked up? any help is appreciated,

[DannyR]

I keep a couple of trigger springs and magazine inserts. That's all.

[T. Harless]

I keep multiples of everything, and I do mean everything, except firing pins, locking blocks and extractors in 9mm, .40 and .45. That's just an economic thing figuring if one of those parts go, I can canabalize another pistol while waiting for a part.