Co-Witnessing Iron Sights with a Red Dot
Absolute or lower 1/3 co-witness? It comes down to mount height and how much clean window you want. Here's the difference.
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Field Notes
Product guides, equipment care and buyer education from the D&R team.
What Is Parallax on a Rifle Scope, and How to Adjust It
If your reticle seems to float over the target when you move your head, that's parallax. Here's what it is and how to dial...
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Enclosed vs Open Emitter Red Dots: Which Is Better?
Open emitters are lighter and smaller; enclosed emitters are sealed against the stuff that blocks a dot. Here's how to choose.
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How to Choose a Hunting Riflescope
A hunting scope has a different job than a target scope. Here's how to pick magnification, reticle and glass for the game you actually...
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Understanding Reticles: Duplex, BDC, Mil-Dot and Trees
Duplex, BDC, mil-dot, Christmas tree — the aiming pattern inside your scope should match how you shoot. Here's what each one does.
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Building a Glassing Kit for Western Hunts
Western hunting is won behind glass, not behind the trigger. Here's the kit that lets you find and judge animals from a distance.
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SIG Sauer ROMEO Red Dot Lineup Explained
SIG's ROMEO family spans pistol micros to tube-style rifle dots. Here's how the lineup breaks down so you can match one to your gun.
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EOTech EXPS vs XPS: Which Holographic Sight?
Same holographic reticle, two different bodies. The EXPS is built to run a magnifier; the XPS is the lighter, lower-profile choice. Here's the split.
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Athlon Ares vs Midas vs Cronus: Which Line?
Athlon stacks its riflescopes in clear tiers. Here's how Midas, Ares and Cronus differ in glass and price so you buy the right level.
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Prism Scope vs Red Dot vs LPVO: How to Choose
A prism scope sits between a red dot and an LPVO. Here's what it does better, what it gives up, and who should choose...
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Understanding Lens Coatings and Optical Glass
Two scopes with the same magnification can look completely different. The reason is usually the glass and its coatings. Here's what to look for.
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How to Choose Scope Rings: Height and Diameter
Rings look simple, but the wrong diameter or height ruins an otherwise great scope. Here's how to get both right.
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