<s>
The	O
Stack	B-Device
Light	I-Device
Rifle	I-Device
is	O
a	O
light	B-Device
gun	I-Device
that	O
was	O
manufactured	O
by	O
Stack	O
Computer	O
Services	O
for	O
use	O
with	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
Commodore	O
64	O
,	O
and	O
VIC-20	B-Device
.	O
</s>
<s>
The	O
rifle	O
is	O
bundled	O
with	O
three	O
games	O
on	O
tape	O
:	O
High	B-Device
Noon	I-Device
,	O
Shooting	O
Gallery	O
,	O
and	O
Grouse	O
Shoot	O
for	O
the	O
Spectrum	O
.	O
</s>
<s>
Different	O
games	O
were	O
offered	O
for	O
the	O
Commodore	O
64	O
and	O
VIC-20	B-Device
versions	O
(	O
all	O
the	O
games	O
for	O
these	O
two	O
systems	O
were	O
included	O
on	O
one	O
cassette	O
)	O
.The	O
Stack	B-Device
Light	I-Device
Rifle	I-Device
is	O
differentiated	O
from	O
future	O
light	B-Device
guns	I-Device
as	O
being	O
realistic	O
looking	O
.	O
</s>
<s>
These	O
three	O
parts	O
combined	O
to	O
provide	O
a	O
reasonable	O
–	O
if	O
not	O
perfect	O
–	O
degree	O
of	O
accuracy	O
,	O
and	O
allowed	O
the	O
user	O
to	O
effectively	O
use	O
the	O
light	B-Device
gun	I-Device
from	O
the	O
comfort	O
of	O
an	O
armchair	O
.	O
</s>
<s>
One	O
can	O
extrapolate	O
that	O
the	O
multi-part	O
design	O
was	O
later	O
mimicked	O
on	O
the	O
Sega	B-Device
Menacer	I-Device
.	O
</s>
<s>
Variants	O
of	O
the	O
Light	O
Rifle	O
were	O
available	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
VIC-20	B-Device
,	O
and	O
Commodore	O
64	O
and	O
all	O
perform	O
the	O
same	O
function	O
.	O
</s>
<s>
Like	O
the	O
Atari	B-Device
XG-1	I-Device
light	I-Device
gun	I-Device
,	O
the	O
Stack	B-Device
Light	I-Device
Rifle	I-Device
is	O
treated	O
by	O
the	O
hardware	O
as	O
a	O
light	B-Device
pen	I-Device
.	O
</s>
<s>
The	O
main	O
component	O
of	O
the	O
Stack	B-Device
Light	I-Device
Rifle	I-Device
System	O
is	O
the	O
electronic	O
target	O
pistol	O
that	O
is	O
connected	O
to	O
the	O
computer	O
by	O
a	O
generous	O
length	O
of	O
lead	O
.	O
</s>
<s>
On	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
version	O
the	O
connector	O
contains	O
two	O
chips	O
and	O
a	O
couple	O
of	O
simple	O
components	O
to	O
interface	O
the	O
main	O
electronics	O
inside	O
the	O
gun	O
to	O
the	O
computer	O
.	O
</s>
