Often cited for better ergonomics than original Glock frames, including a "rakish" grip-to-frame angle and improved finger grooves. The 80% Build Process
Builders use a provided finishing jig and drill bits to remove excess material and drill pin holes. pf45-80
The term "80%" refers to the frame's manufacturing state; it is not considered a firearm by federal standards until the user machines specific areas. Often cited for better ergonomics than original Glock