SDI Optical Service Rifle Scope and Mount Features


     The SDI scope mount and Bresser Condor scope have been specifically designed for the new 2016 AR -15 Service Rifle rules.

SDI scope mount description

*Patent pending *

     The SDI mount gives you maximum flexibility on scope mounting position and exact repeatability on moving or removing the scope and mount from the rifle. The mount has a 3-inch forward extension over the hand guard to let you position the scope correctly.


     The lower rail is made to the new NATO STANAG 4694 specification not the old MIL-SPC 1913 specification. The military finally realized that the old 1913 spec was not repeatable on moving or removing the scope. This new spec corrects this problem. As far as we know this is the first USA built mount to use the STANAG 4694 spec.


      The upper rail is a European dovetail which is also repeatable upon moving or removing the scope and rings. The rings have 6 available positions covering a 2 ½ inch range. If you wish to move the scope through this range often then optional rings with lever closers are available at an additional charge. The rings are machined steel and are extremely accurate.


                               Bresser Condor 1-4x24 Description

    The Bresser Condor 1-4x24 is an updated version of the popular Konig 1-4x24, which was discontinued in late 2013.  It's been a long time coming, but it looks like the wait has been worth it.  

    The Condor 1-4x24 is a fully waterproof, fog-proof, nitrogen purged rifle scope with a 30mm main tube. It's a solidly built optic with a one-piece aluminum body, and has some noticeable improvements over its predecessor.

   Glass quality has been massively improved, with a notable decrease in chromatic aberration, as well as a huge increase in clarity.  

     The 24 mm objective diameter of this scope gathers 44% more light than other makes with only a 20 mm objective diameter.

    The Bresser Condor has a German #4 reticle and an illuminated dot if you choose it.  The illuminated center dot is just bright enough to see in light conditions, and not so bright that it will blind you at night.  A big improvement here is that the Condor 1-4x24 has been upgraded to a digital illumination system, which is controlled by a pair of buttons instead of the commonly found analog knob.  

    A common complaint about rifle scopes is that they have turrets that seem imprecise and lacking tactile feedback.  Not in this case.  The ¼ minute clicks on the turrets of the Bresser Condor 1-4x24 are astonishingly precise, and exhibit some excellent audible and tactile feedback.  

     The turrets on this scope give you plus or minus 13 minutes of adjustment on a single turn. We recommend that you zero the turret scales at your 300-yard rifle zero. Then you go down about 2 ½ minutes for 200 yards and 11 minutes up for 600 yards. These adjustments are based on our quality control ammunition (Hornady 223 - 75gr BTHP match #8026). Other ammo may vary slightly from these numbers.

    Treat the knobs like they are right handed screws. Turn clockwise for down and left and counterclockwise for up and right.  You don’t have to look just reach up and feel the clicks.

1 - 4x
Objective diameter:
24 mm
Exit pupil:
5.2 - 15.2 mm
Field of view:
26.1 m / 15.3 ft - 33.5 m / 100.5 ft
Eye relief:
100 mm
Tube diameter:
30 mm
Click value:
1/4 inch @ 100 yards
Lens coatings:
Fully multi-coating
One-piece anodized aluminum
Nitrogen purged:
9.5 x 2 x 2.5 inches
16 oz
Included accessories:
Cleaning cloth, plastic lens caps, CR2032 battery

Optical Service Rifle (OSR) Scope and Mount

SDI highly-accurate mount with Bresser Condor 1-4x24 scope

        $299.50  with free shipping                          anywhere in the USA