Project Blade Runner Part 2
barrel also gets a full painting run, plus one extra coat and a couple of coats
to the inside of the barrel.
Switching to the mill setup, three holes are drilled for the screws that mount the Steyr receiver and the ammo housing to the model. A flat cut must then be milled near the housing end of the barrel by the Bulldog's frame so that the barrel will clear the cylinder's rod.
Next on the milling setup, the aluminum tube made for the bolt is milled by cutting off a section to make a C-shaped part; then with a special jig made to hold this new part, I mill a slot in it for the sliding travel groove. Finally, a hole is drilled and deeply countersunk to facilitate mounting of the cocking lever.
the hammer, the small lever return spring hole must be drilled by hand, and then
the spring, lever, and retaining pin are installed.
The hammer can then be pinned into the Bulldog frame using the special
piece of brass tubing fabricated for this purpose .
Next I install the pistol grip frame by fastening it with four screws -- two per side.
the primary trigger and grip frame in place, the trigger guard can be installed
into its rear capture slot and then fastened with the cylinder swing arm to the
frame. A 4/40 Allen screw is used
to hold both.
then assemble the hammer spring assembly.
The ball end is mounted onto 4/40 threaded
rod, which is cut to length, sheathed with a pre-cut brass tube, fitted with the
return spring, and fastened together with a washer and 4/44 nut.
the tubing previously parted with the lathe, I solder these parts together to
form the cylinder's locking rod. Slipping
on the cylinder's swing arm and spring, I then solder a small piece of tubing
onto the assembly to hold the spring and arm together.
A quick trip to the belt sander results in smooth, beveled joints.
a 6/32 button head Allen screw is cut to length and threaded into the tapped
front scope mounting hole of the Steyr receiver in order to form the front
sight, exactly like the original prop. The three remaining scope screw holes of
the Steyr are plugged with slotted set screws,
again to match the original. One of
these is a special screw -- slightly longer to allow it to lock into the bolt's
slot at the top for rotational travel control.
The tiny tip-like projection of the Steyr receiver end cap is then glued into place, followed by insertion and gluing of the cap itself to plug the opening of the receiver above the Bulldog barrel.
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