Larue Lt660-Hk Micro Lower 1/3 Cowitness

The Larue Lt660-HK micro lower 1/3 cowitness mount is a precision optics base engineered for shooters who run both a primary optic and iron sights on the same rifle. This mount positions your sight picture at lower 1/3 cowitness height, letting you use backup iron sights through your optic's magnified view without obstruction—critical when you need redundancy on a duty rifle, competition setup, or any gun you're betting your life on. Built by Larue Tactical, a manufacturer known for no-compromise engineering, it's the kind of base that earns its place on serious rifles.

Lower 1/3 cowitness is the sweet spot for tactical and practical shooting. Your irons sit high enough that you can see them through your scope at any magnification, but low enough that they don't clutter your primary sight picture. Whether you're running a magnified optic for distance work or a red dot for speed, this mount keeps your backup sights immediately available without compromise. If you're building a duty rifle, a precision AR for competition, or a hunting gun with redundant aiming systems, this base solves the alignment problem most shooters face.

Larue mounts are known for rock-solid repeatability and zero-shift prevention—attributes that matter when your optic has to stay on target. This micro lower 1/3 cowitness base is no exception, engineered to lock your optics in place and keep them there through heavy use, recoil, and field conditions. It's not the cheapest base on the rack, but it's built for shooters who understand that optics mounting is not the place to cut corners.

Frequently Asked Questions

What's the difference between lower 1/3 cowitness and absolute cowitness?

Lower 1/3 cowitness positions your iron sights about one-third of the way up your optic's sight window. This gives you a cleaner primary sight picture through magnified scopes while keeping backup irons visible and accessible. Absolute cowitness (also called absolute co-witness) aligns your iron sights with the center of your optic's reticle—useful for red dots and lower-magnification optics.

Will this mount work with my rifle platform?

This mount is designed for HK-pattern firearms. Verify your rifle's interface before ordering. If you're unsure, our team can help confirm compatibility with your specific setup.

What does "micro" mean on this base?

Micro refers to the mount's compact footprint and lower profile compared to full-size optics bases. It's designed for lightweight, efficient builds where you want to keep your sight height minimal while still achieving proper cowitness with backup iron sights.