7.62x25 Pistol lower assembly
The first step will be to weld the back end of the lower sheet metal.
Use a section of aluminum angle clamped in the rear to act as a heat sink
to prevent burn through. Weld both sides, TIG is the preferred method to
use.
Use a section of aluminum angle clamped in the rear to act as a heat sink
to prevent burn through. Weld both sides, TIG is the preferred method to
use.
Drilling the FCG holes
This is a critical operation to ensure proper operation of the fire
control parts and safety. Use a #22 drill bit, it is .157" diameter to drill the
hammer and trigger pin holes. Make sure the sheet metal is laying flat on
the drill table and that the table is square. Use a new drill bit with cutting
fluid and drill slowly with light steady pressure. Drill completely through
both sides. Lightly chamfer the holes and remove burrs inside. Check the
fit of the holes with the drill rod supplied.
Next drill the holes for the safety, you can use a 10mm bit or a letter
X bit. Chamfer and deburr the holes, then check the safety for proper fit.
This is a critical operation to ensure proper operation of the fire
control parts and safety. Use a #22 drill bit, it is .157" diameter to drill the
hammer and trigger pin holes. Make sure the sheet metal is laying flat on
the drill table and that the table is square. Use a new drill bit with cutting
fluid and drill slowly with light steady pressure. Drill completely through
both sides. Lightly chamfer the holes and remove burrs inside. Check the
fit of the holes with the drill rod supplied.
Next drill the holes for the safety, you can use a 10mm bit or a letter
X bit. Chamfer and deburr the holes, then check the safety for proper fit.
With a small square file make the notch in the top of the safety hole,
test fit it as you file.
test fit it as you file.
Next make a hammer and trigger pin from the drill rod in the kit. The
pins will be about 1" long or slightly wider than the lower sheet metal.
Chuck the drill rod up in a drill press and mark the locations for the
grooves and cut them with a small round file. These grooves will retain the
pins. The pin with one groove is the hammer pin.
pins will be about 1" long or slightly wider than the lower sheet metal.
Chuck the drill rod up in a drill press and mark the locations for the
grooves and cut them with a small round file. These grooves will retain the
pins. The pin with one groove is the hammer pin.
Install the FCG parts and safety and check for proper operation, cock
the hammer with the trigger pulled, it should lock on the disconector, when
you release the trigger it should catch the hammer. Pulling the trigger
should drop the hammer. Test this several times.
the hammer with the trigger pulled, it should lock on the disconector, when
you release the trigger it should catch the hammer. Pulling the trigger
should drop the hammer. Test this several times.