The Firing Pin Reamer is our 4 flute GW Armory cutter for finishing the large diameter, angle, and radius leading into the small through hole on the AR-15 bolt. Use this tool after both diameters are roughed to produce the highest quality ID finish.
Firing Pin Reamer
4 Fl, 5 HLX | Ø.1575 | .1875 IN. SHK |4.0 IN. OAL | CARBIDE REAMER
End Type: Square End
Length of Cut: 1
Cutting Diameter: 0.0549