rear pin detent(has 2 pice screw front pin)
safety detent spring
bolt hold-open and spring
mag release button
Parts come in a Colt bag, looks like a mixture of very slightly used parts and new.
I don't have any lower that I can use them on, so off they go.
Sorry, no pics.
Glock 17/21/31 hi cap magsm niw
BUIS (+$ from my side)