The Forward Assist Combo Drill is our 2 flute GW Armory step drill for drilling and counter boring the forward assist hole and c’bore in an AR-15 upper reciever.
Forward Assist Combo Form Drill
2 Fl, 40 HLX | Ø.315 | 120 DEG. INCL. POINT | .625 IN. SHK |5.0 IN. OAL | CARBIDE DRILL
End Type: Square End
Length of Cut: 2.375
Cutting Diameter: 0.315