Optic of the week – GRSC 1-10x Full Spectrum Optic


I just realized as I wrote this title that everything I have ever seen that was named Full Spectrum something or another has been kind of a let down.

Long ago I told Shawn that my holy grail optic would be a 1-10x. But I knew that as soon as I bought one a cheaper, better 1-20x would come out. So if a 1-20x comes out next week, you can thank me for that.

Story I read some years ago said that Fred of GRSC came up with the idea of a horse shoe (or in the past called a flat tire) reticle. That he went to a bunch of different scope companies to sell his reticle to them and they all turned him down. Shortly after, the various scope companies started making their own horse shoe reticles. So Fred went and ordered scopes with his reticle in it to sell.

The 1-10x is the newest optic of his. He specced out his custom reticle to be put in the Atibal 1-10X scope. It comes in the box with a spare battery, flip up covers, a sun shade and a kill flash. At 10 inches long and 21 oz, it is a nice size and not overly heavy.

The oversized power adjustment is awesome. It makes changing the magnification easy. It is my favorite part of this scope.

The turrets are capped. The clicks were easy to tell apart.

The turrets are nice. I’m not sure if I would want to run them uncovered, but they would probably be find if you did. When I zeroed the scope, the windage adjusted just as I expected, I had a great deal more elevation movement than I expected. I’m not sure if I dialed in the wrong adjustment, or if the scope wasn’t performing at expected. If I keep this scope, I’ll do a box test later.

I first used it on a 5.56 upper. When I started trying to zero at 25 yards, I found it rather hard. It seemed like I could either have the target in focus, or the reticle, but not both. Under 4x, I couldn’t make out the reticle, over 7x I the target was too blurry to see. Finally I settled for a blurry target and sighted in quickly. I then slapped it on a 5.45 and fired a couple hundred rounds at 15 yards trying it for speed.

Let us take a look at the reticle:

10X Note the thick horseshoe and the bullet drop reticle set up for M855.
10X illuminated
1X illuminated

The illumination is said to be daylight bright. In shade it showed up well, but once I was out in the Florida sunshine it was not bright enough.

Parallax is suppose to be set at 100 yards. I really struggled with the ocular focus on this scope. I kept fiddling with it as I felt the reticle was a little fuzzy. In the end I think it is the reticle it self that is less than crisp. (Edit – as I was writing this article I played with the ocular focus more. I got it better.) The eye relief seemed fine, but the eye box is small. It was very unforgiving on head placement. If I wasn’t lined up right, the reticle would get fuzzy or have a shadow.

I like the horse shoe reticle, but I feel like this execution could have been done better. The horseshoe is very thick, and obscures part of your target at 10X. At 1X it is very tiny, and I relied more on the large circle than the center horseshoe. The view is pretty good. A little bit of a bubble effect at 1X, but certainly acceptable. (Edit – when I adjusted the ocular focus almost all the way out to get the cross hair crisper, it make the 1X setting appear to be more magnification, the picture was not as flat as before)

I did a bunch of rapid fire with this optic at 15 yards. At first I used the brightest illumination and shooting at a red dot on white paper, the dim red reticle washed out. Turning the illumination off worked better.

I didn’t feel particularly fast when I was using this scope. But I think speed would come with more practice. From 15 yards I shot using 1X, 4X, and 10X. I was shooting a much smaller group with 10x than the other two. I think this might have been due to the reticle being clearer at that magnification. Unfortunatly I didn’t think to bring a timer, so I may have been shooting slower at the higher magnifications and didn’t notice it. I choose to intentionally speed up with the 4X and 10X shooting and that opened up groups.

I wouldn’t call this a proper review. We still don’t know how reliable or durable this scope is. How accurate its bullet drop chart reticle is. Those are very important questions. If I were looking for an optic for a fighting weapon, I spend more would go with a proven product.

If I had to rate this, at the moment I would give it a C-. It is ok, but I wouldn’t call it great. But it is great to see more lower cost 1-X power scopes.


  1. Nice. I’d love to see more exploration into the Elcan DR style of solution. In my admittedly hobbyist use of 1-X scopes I either want magnification or I don’t. The in betweens are just there. I put on a tail to let me speed through them quickly but rarely use them.
    Leupold’s prismatic sight was an out of the box take on it which makes me wonder if a dual magnification option with two simultaneous fields of view would be viable.

  2. I have great annoyance with those using the term “daylight bright” to described the visibility of a lighted reticle. “Bright” essentially means eye searing ! Once again, the manufacturer misleads potential buyers with the misnomer of “bright”. This GRSC reticle is simply daylight VISIBLE. It is like the lighted reticles in 99% of low power variable optics….visible. Simply visible. Not bright !

    It would be nice if Americans start learning the English language.


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