Project Blade Runner Part 2

Page 3

 

Using a small flat head 4/40 screw, the bolt cocking lever is fastened to the C-shaped tube, which is then installed onto the bolt and fastened together with a 4/40 Allen screw.

The bolt assembly is then inserted into the receiver, and the longer set screw in the Steyr receiver is screwed in to engage the travel slot in the top of the bolt. 

Next, the entire Steyr receiver assembly is slid onto the bars cast into the Bulldog's frame using the slot and rail mounts.  The assembly is then fastened to the Bulldog barrel at the front using two 4/40 Allen screws inserted through the milled notches in the receiver.

The right side cover can be mounted at this point.  I designed this cover to lock onto the side of the Steyr receiver near the cocking lever slot as a way to reinforce and support the receiver assembly.  This seemed an important consideration, because once the machine work was completed to allow mounting onto the Bulldog frame, only a short, small piece of plastic below the cocking lever slot, weakening the receiver casting below and rearward of the lever where the Steyr safety switch mounts. 

For attachment of the right side knob, I thread a short piece of 4/40 rod into the knob and then mount this to the front edge of the right side cover into a previously prepared hole. 

As described earlier, the front screw head is now a casting that must have a short piece of 4/40 threaded rod glued into.  This allows threading into the boss made for actual mounting to the Bulldog's frame.

Once the cover is fitted and the cocking lever and bolt action satisfactorily tested, I can finally mount the Steyr bolt cap casting using a small 4/40 button head Allen screw exactly like the original prop.

Once the cover is fitted and the cocking lever and bolt action satisfactorily tested, I can finally mount the Steyr bolt cap casting using a small 4/40 button head Allen screw exactly like the original prop.

The cylinder is then mounted to the swing arm for final assembly.   To give the model actual rounds for the cylinder, I manufactured “safe” ammo by pressing hollow point bullets into primerless cartridges.  These rounds are now loaded into the cylinder,  which is swung closed to engage the locking rod into the Bulldog frame.  Things are really shaping up at this point.

 To mount the side rod, its knurled end cap is first glued on, and then the entire rod is glued to the left side cover.  The left side cover with the rod can now be mounted directly onto the swing arm with two 4/40 Allen screws

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