I've got both 1x and 3x, Primary Arms SLx, prism sights.
I shoot indoors, with a short distance (about 12 yards).
For me, the 1x, the reticle is too small, at any distance.
But the 3x reticle is plenty large enough to be seen clear, without taking up any real real estate as you look through it.
They work well for me indoors or out. Most of my shooting is indoors, with a moderately light hall.
The prism scopes/sights work VERY well with people that have "astigmatism" in their eyes. This does NOT hamper the crispness of the reticle at all, once the lens has been adjusted to YOUR eyes.
Per "Scouty's" note about...not...being "clear"... It's NOT the scopes problem that it's not clear / crisp. He has not "properly" adjusted the first lens to suit "his" eyes.
This NEEDS to be done on ANY prism sight that you may buy, or the sight is basically useless. It just takes a few minutes, with a white, or light colored, featureless background so you can set the focus ring to match..."your" eyes. JUST like binoculars.
FOLLOW THE INSTRUCTIONS !
I can recommend two for you. In no particular order -
1 - The
Primary Arms, SLx 3x. Red or green, you pick. I have both, the green is a little easier on the eyes.
Shop Primary Arms SLx 3x MicroPrism Red Dot Sight | Up to 12% Off 4.6 Star Rating on 50 Reviews for Primary Arms SLx 3x MicroPrism Red Dot Sight Best Rated + Free...
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2 -
Swampfox Raider, Micro Prism sight, in 1x. Also, red or green. Has a very similar sight picture as the Primary Arms SLx, with the "chevron" as the main character on the reticle. The Swampfox is similar in size to the Primary Arms. I like it a little better than the SLx 3x, but just a little. I actually just bought my second one last week.
Shop Swampfox Raider Micro Prism 1x20mm Prismatic Sight | Up to 14% Off 4.5 Star Rating on 11 Reviews for Swampfox Raider Micro Prism 1x20mm Prismatic Sight Best Rated + Free Shipping over...
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Have fun...
Mike