4-40 Set Screw Kit

This item is out of stock

4-40 Set screw kit, for take down pin mods and can also be used for permanent attachment of  muzzle devices by using set screw instead of pin and welding over.


(2) #42 HSS drill bits

(1) 4-40 H2 thread, 3 flute, plug type, USA made tap

(10) 4-40 x 1/8" carbon steel set screws

(1) 0.050" Hex Key