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primary arms prism
A rainbow is an optical phenomenon that can occur under certain meteorological conditions. It is caused by reflection, refraction and dispersion of light in water droplets resulting in an effect similar to a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the Sun.
Rainbows can be full circles. However, the observer normally sees only an arc formed by illuminated droplets above the ground, and centered on a line from the Sun to the observer's eye.
In a primary rainbow, the arc shows red on the outer part and violet on the inner side. This rainbow is caused by light being refracted when entering a droplet of water, then reflected inside on the back of the droplet and refracted again when leaving it.
In a double rainbow, a second arc is seen outside the primary arc, and has the order of its colours reversed, with red on the inner side of the arc. This is caused by the light being reflected twice on the inside of the droplet before leaving it.
Great optic, no issues, just upgraded to an ACOG so letting this one go. Link to specific model below. This one is for 5.56, .308, or 5.45x39. No box or manual. New these are $250. Yours for $150 $100 shipped. No trades at this time. If this ad is up, it's still available...
I was lucky enough to snag one of these last week while it was on sale for $99 with free shipping. :p
Primary Arms SLx 2.5 Compact 2.5x32 Prism Scope - ACSS CQB-M1 Reticle
While unboxing I noticed that there were more than a few handling marks than normal but seeing as it was $150 off so I...
Up for sale is my mint condition Primary Arms SLx 5x prism. It has never left my house and looks nearly new. Glass is perfect, illumination is great. Includes riser and extra screws. Priced for a quick sale!
Free shipping.