The K6 is a fascinating piece of history in American hunting. Though essentially the K4’s big brother, it has always lived in its shadow. The K4 outsold the K6 many times over, but its debut into the K-series line up is probably what makes it so neat. When the K6 first came onto the scene in 1948, hunters were looking for more magnification (as has been the progression for the last several decades). There’s a multitude of reasons for this, but we’ll keep it simple with the generalization that post World War II, recreational hunting, specifically, western big game and varmints had exploded in popularity. Now this isn’t to say Weaver predicted the market, but it goes to show as a sign of the times.

Probably my favorite thing about the K6 comes from the ads that circulated in the early 1960’s:

”The K6 is used when you want to place your shots with pin point accuracy - for varmints or game where the range is long and the mark small… It gives the precision needed for targets, chucks, crows, hawks, and all other small game out at extreme range”

Given the state of optics now in 2026, it seems wild that a 6 power scope was at one time marketed as a precision target and long range varmint optic! How about another word from one of the experts, General J.S. Hatcher, technical editor for American Rifleman at the time:

”K6… fine for those long shots across the valley or canyon.”

I suspect it’s not the arrow but the Indian. Anyways, enjoy the photos and the backyard test below.

The K6 in question today

Typical Weaver markings, El Paso made!

Closer look at the turrets.

Ocular lens

Objective lens. Note the small amounts of freckling.

25 yard clarity board test, a slight color tint in the afternoon shade. Perhaps a light cleaning will fix.

10 yard clarity board test. Image is sharp and color contrast is definitely acceptable!

Thanks for reading, contact us if you would like to contribute to our research or if you have any additional information you would like to add. Cheers!

- Hayes