(8) Buffer Spring Needed with (4) Pins inside every other spring. 450-750 Models
This is Metal Fiberour Washer with the Hole of 12mm and O.D. of Approx. 21mm and is 5mm thick.
10 x 1.25 x 22mm Most Common, comes with 2 Copper Washers
Some Models use the finer Thread 10x1.0, let us know if. needed instead
