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The GRSC Combat Rifle Scope
(CRS)


Objective:
      Enhance the lethality/survivability of the individual war fighter in  combat during day and low light conditions.

      The CRS with the proprietary General Purpose Combat M4-62  
(U.S. patent # 7100320 and other patents pending)  illuminated reticle was
designed to meet this objective.

Features:
     This reticle consists of :
1. A 4 MOA thick horseshoe
2. A 10 MOA window (hollow area) in the center of the horseshoe
3. Six Mil Dots to the left and right of the horseshoe
4.Ten inch ranging circles (head size)
5.Small aiming dots extending downward from the center of the horseshoe                                 window.
6. 10 inch long horizontal lead lines
7. 11 position illumination rheostat
Instructions:
   

    Zeroing:
           The bottom of the scope tube should be about two inches above the bore of the barrel                              
           Put scope on four power
           Focus rear eye piece
           Use first aiming dot in the center of the horseshoe window
           Zero two inches low point of aim point of impact at twenty-five yards.
           
This reticle is calibrated for the M4 rifle firing M855 ammo


How to use the reticle:
    The Horseshoe:
           For CQB to two hundred yard speed shooting set the scope on low power. The horseshoe will be your aiming point. The reticle on this scope is on the first focal plane so the horseshoe will get smaller as you decrease the magnification. At low power the horseshoe will appear as a big dot (see picture below).



The long range precision portion of the reticle will get very small and not be useable. As the distance to your target increases the target will appear smaller and the horseshoe will now look like a circle on your target. At CQB to two hundred yards the horseshoe reticle performs as a big dot or circle type aiming point to increase your speed on target. The horseshoe is 4 MOA thick, 18 MOA wide (shoulder width at one-hundred yards). See picture below.



The Window:
    The hollow center of the horseshoe is called the window. The window of the horseshoe is 10 MOA (head size at one hundred yards).

With the proper zero your bullet will hit on or very near the center of the horseshoe from 0 to 250 yards.


The Mil Dots:
      The 6 mil dots to the left and right of the horseshoe serve as anti-canting guide lines and may also be used  for ranging.

How To Use The Ten Inch Ranging Circles:
       The hollow center of the horseshoe is called the window. The window is used for fast ranging on a man sized target at one, two , and three hundred yards. It is 10 MOA. This equals ten inches at 100 yards ( head size ).
See picture below.



Twenty inches at 200 yards (approximately shoulder width). (See picture below).



Thirty inches at three hundred yards (approximately half a mans body length). Half the window equals ten inches at 200 yards ( head size ).
     

Ranging Circles:
   As described above the window of the horseshoe is to be used as a ranging circle on a mans head at 100 yards.
   
Half the window of the horseshoe will range a mans head at 200 yards.
   
The first ranging circle in the center of the lower horseshoe will range a mans head at 300 yards.

The ranging circles below the horseshoe to the left and right of the aiming dot labeled number 4 range a mans head at 400 yards. (see picture below).



The ranging circles below the horseshoe to the left and right of the aiming dot labeled number 5 range a mans head at 500 yards.



The Aiming Dots:
      As the magnification of the scope is increased the aiming dots will clearly come into view. The aiming dots extend downward from the center of the window.  (see picture below) .



The first dot is 1 MOA, it is your aiming point for precision shooting from 0 to 250 yards.

The 2nd  aiming dot inside the 300 yard ranging circle is .75 MOA. It is your aiming point at 3 hundred yards.

The 3rd through 7th aiming dots are .5 MOA.

The 3rd dot is your aiming dot at four hundred yards.
The 4th,6th ,and 7th dots are non caliber specific aiming dots.

The 5th dot is your aiming dot at 500 yards.


Horizontal Lead Lines:
      The horizontal lead lines allow you to adjust your aiming point for a moving target or windy conditions.

     The horizontal lines below the horseshoe allow you to lead a target in 10 inch increments (half frontal body width or full body width sideways) at 4 and 5 hundred yards.

     The horizontal lines are 10 inches long at 4 and 5 hundred yards, the space between the horizontal lines is 10 inches at 4 and 5 hundred yards.

     Once you have determined the distance to your target using the ranging circles, follow the horizontal lead lines to the center aiming dot. This will be your aiming point for that distance.(see picture below).




Illumination:    
     This scope has adjustable illumination in the form of an 11 position rheostat.

    The number 1 position is the dimmest and number 11 is the brightest.

    The illumination knob can be turned in either direction.

    A half turn between any numbered position will turn the illumination off.


In summary:

Advantages Of The GRSC CRS/ GPC M4-62 Reticle Scope

     Most experienced shooters will agree the fastest aiming points for CQB to midrange shooting situations are circle or dot type reticles. At low magnification the 4 MOA thick horseshoe of the M4-62 reticle provides the speed of a big dot for CQB, and a circle at midrange distances.
    Increasing the magnification provides a fast simple ranging system combined with precision aiming points out to at least 5 hundred yards.  
         The 11 position rheostat provides illumination for various shooting environments.


          www.GRSC.com

I look foward to putting this optic through its paces. Any chance of a full daylight/lit reticle pic?

Quoted: If only you could have contracted this optic with Meopta instead of China. We could have the perfect sub $1000 optic. This scope plus Schott glass and daytime illumination would rock.  It would crush the demand for Leupold MR/T 1.5-5, CQT, Meopta K-Dot, Horus, and Nightforce scopes all at once and even pull half the S&B crowd too.

  I did meet with reps from Meopta at the shot show 2/3 years ago but they were not interested in doing a ffp scope with this type of reticle. If I remember correctly, at that time thier illumination was not as bright as it is now. Iwould love to see this reticle in thier scope. I talked with a employee from Trijicon last night about the possibility of having the M4-62 reticle put in the TR21. Can only hope for now.

Quoted: Well,  I'm in!  FWIW,  Once I get it in my hands, it will be competing against a Meopta K-Dot for the real estate on top of my competition gun.   Competition won't require the toughness this scope was built for, but it will likely hinge on: True 1X Speed (some illumination, some reticle features will provide this) Glass quality Ranging capabilities Rugged (only to an extent) I won't care too much about submersability, battery life or a host of other combat considerations. Ed,  Hope it all works out for the scope.  Given the miserable track record between Mueller and China,  I'm cautiously optimistic.  But there's more caution than optimism in that mix

   

   Kdmoore,

         I too hope this scope works out, hopefully china can maintain the quality control on this scope. I think people are going to be real happy with the reticle . The GPC 343 reticle was used in combat in the sandbox. The GPC 343 reticle is a non caliber specific reticle but it uses the same horseshoe for CQB. This scope was made by US OPTICS in a 1.5x6 ffp. There were two CQB and one midrange(about 300m) kills with this scope. The CQB kills were at about 30 ft. One in a room and one at a road block. The feed back on the scope and reticle was very positive. Recommed changes were caliber specific reticle (done) and better daylight illumination(working on that). I just hope the new scope will help keep some of our warfighters alive (keep them in your prayers).

  Ed
 GRSC

Quoted:
I was gonna ask......... are these etched glass reticles?


     Yes.

    Ed
  GRSC

Quoted: Another question............ FOV? I see the 1X photo at 100yards and looks fairly wide, but I'd like to know the numbers. Thanks

  23'@4x  

  97'@1x

     ED

  GRSC

Quoted: Quoted: Quoted: If only you could have contracted this optic with Meopta instead of China. We could have the perfect sub $1000 optic. This scope plus Schott glass and daytime illumination would rock.  It would crush the demand for Leupold MR/T 1.5-5, CQT, Meopta K-Dot, Horus, and Nightforce scopes all at once and even pull half the S&B crowd too.   I did meet with reps from Meopta at the shot show 2/3 years ago but they were not interested in doing a ffp scope with this type of reticle. If I remember correctly, at that time thier illumination was not as bright as it is now. Iwould love to see this reticle in thier scope. I talked with a employee from Trijicon last night about the possibility of having the M4-62 reticle put in the TR21. Can only hope for now. While I love your reticle I have to wonder how beneficial the FFP is in a scope of this magnification.  Out to about 125 yards the 1X setting is good enough even if it is set up for 100 yard zero at 4X to get good hits.   If the scope was designed around a 50/200 yard zero at 4X and had a dot above the centerline zero for the 100 yard range and the 300-600 marks below the reticle you could easily use the optic at 1X-4X out to 200 yards with no problems.  I cant imagine using the scope at any magnification other than 4X for shots over 200 yards.  I know you give up being able to use 2X or 3X at 300+ yards but who would actually use the scope in that fashion?  The benefit is the MUCH better usability of the scope at 1X as the reticle is full sized.  While your reticle design is IMO perfect for 4X the ability to use the scope unilluminated is hindered as it shrinks so small at 1X.  While I completely understad the reasoning behind a FFP reticle in higher powered scopes, it seems to make less sense in a 1-4X. If you ever do talk to Meopta again I think this reticle design in a scope FFP or not, it would cause me to immediately sell my Meopta and buy your version.  The reticle is Meopta's weak point IMO (and that long sunshade that blocks access to my top rail). Also consider people who buy scopes in that price range and actually shoot over 200 yards will usually be shooting better ammo.  A reticle designed around the 77 grain MK 262 or 75 grain Hornady TAP from a 14.5" barrel would appeal to a great many.  The BC is close enough either ammo could be used and match up while the guys with 16" barrels could use .223 pressure ammo and people using the match style 13.7 and 12.5" barrels would also have enough velocity to make the reticle usable. I completly understand why you would want the 62 grain reticle in this price bracket and for a first optic.  I hope your product catches on and you continue to expand your product line.  It is nice to see someone with good ideas bring products to market like this.

DevL

   This type of reticle (the horseshoe part) is avalable from Valdada in several variable power sfp scopes. I worked with Valdada on the reticle for thier CRT 1x4 scope. I did T&E on this scope and was not satisfided with the final production product for several reasons.
   Send Me a e-mail with your phone # and I will explain the reticle in detail you, I think this will be the best way to address your questions and comments. As I said before I'm not very good at key punching, it would take me forever to type out a proper response.

    Thanks
        ED
     GRSC