Another very interesting optic is this periscope
                  red dot. I do not have much information on this
                  either, only that the periscope may be able to rotate
                  for left or right hand shooting. This is a non
                  magnified red dot intended for counter terrorist units
                  and can be fired from behind cover as shown.
                  Originally an LEMT subsidiary optic this is now on the
                  main BelOMO page as well.
              
                Update: RSP-1 has entered serial production
                  and is available in the US, and I was able to take a
                  look at both RSP-1 and PKP-2 firsthand. RSP-1 appears
                  to be an updated version of PKP-2 by combining the
                  rotating assembly of PKP-2 to the robust PKA Venezuela
                  body. While PKP-2 appears to remain a prototype only,
                  RSP-1 is actually available for purchase (though rare
                  and expensive). 
              
              
              
              
                  I was loaned PKP-2 and it is apparently the same one
                  in the photo above, possibly the one and only
                  prototype of the model. PKP-2 is based on the PK01-VS
                  and is essentially the same optic with the addition of
                  the periscope. It functions by using a set of mirrors
                  to reflect the dot into either the primary ocular lens
                  or to the rotating periscope ocular. This is done by
                  flipping a switch which causes one ocular to become
                  opaque and allow the view through the other. I would
                  speculate that based on the serial number of the PKP-2
                  (100012) and the first two prototypes of VS that came
                  in (100006 and 100009) that these three were made at
                  the same time, probably a small batch of 15-20 total.
                  
                  
                  PKP-2 on the 74M
              
              
RSP-1 appears to be identical to PKA-Venezuela
                  including the distinctive hammer grey finish. The main
                  difference between RSP-1 and PKP-2 is weight and eye
                  relief with RSP-1 being heavier at 27.8 ounces vs 20.3
                  for the PKP-2. RSP-1 periscope extends about 1.4
                  inches past the dust cover toward the rear of the
                  stock, PKP-2 is about 1.8 inches giving it a shorter
                  eye relief. It appears that the periscope assembly
                  adds about 7 ounces to either base optic. Absolute
                  cowitness is still present with both types but I found
                  that when shooting through the periscope it was
                  trickier to get low enough to see the do on the front
                  site post. I believe this has something to do with the
                  reflection of the image in the mirror when using the
                  periscope view.   
              
                RSP-1
              
              
              
Normal sighting view
              
                
Periscope view. While you obviously cannot get a
                  shoulder tuck using the periscope it should be
                  effective for 100m shots with ease due to the friendly
                  nature of 5.45. This optic was not zeroed at the time
                  of the photo and for safety reasons we did not shoot
                  with it, but after finger banging it for a while I
                  have every confidence this will work as advertised.
                
              
                PKP-2 and RSP-1 on AK105s. Here you can get an idea
                  of how far back each extends. 
              
                If you measure by the two arms of the mounts you
                  can estimate how far back the PKP-2 will be compared
                  to RSP-1 (1.4 inches past dust cover for RSP-1 and 1.8
                  for PKP-2)
              
                Family view: 
                  Comparison of RSP-1 and PKA Venezuela (top)
                  PKP-2 and PK01-VS (bottom)
              
                Opaque lens view
              
The dot appears the same regardless of which
                  ocular is it viewed through. I found that PKP-2 was
                  not as bright as PK01-VS but RSP-1 was every bit as
                  bright as PKA Venezuela. 
              
              
                
                
As with PK01-VS vs PKA Venezuela I favor the PKP-2
                  over the RSP-1 mainly due to weight. RSP-1 has a bit
                  of heft to it at 27.8 ounces but while noticeable it's
                  not unmanageable. When it comes to PK01-VS and PKA
                  Venezuela I happily recommend them both and if PKP-2
                  were also available I would recommend them equally
                  even though my preference is slightly toward PKP-2.
                  Overall there is functionally no difference between
                  the two other than weight. 
              
              
              





















