Is this a lemon? Scope shadow and misaligned eyebox on Primary Arms GLX 6-24

Astute Observer

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Hey all, so I own some Primary Arms variable optics - a couple of SLX series (a 1-6 and a 3-18), a PLX (6-30), but I'm having problems with a GLX 6-24.

I thought it would be a great scope, but at the edges of the elevation adjustment, the eyebox goes all wonky.

If I adjust elevation down or up (e.g. dial it down to zero it on a 20 MOA rail, or dial it up for a long shot) I get crazy scope shadow at lower magnifications. At 24x it's not that bad, but it's still there. If I adjust my eye to compensate for the scope shadow, then the field of view becomes an oval and the top is cut off. In essence, I would have to adjust my cheekpiece different for every shot at a different elevation setting.

This doesn't seem right.

Did I get a lemon? Or are other GLX scopes like this? Because if they're all like this, that's a real design flaw. I'm really hoping I got a lemon and can get this warranty replaced...

I've enclosed some photos to show what I'm talking about. Apologies for the potato focus on the reticle, I was using my phone's camera, and needed to use the illumination dial on the scope to get the reticle to show up...

At low magnification, when the reticle is centred in the visual field,
with a normal eye placement, you get significant scope shadow

moYUjAN.jpg


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When you move your eye to be high or low to offset this scope shadow,
you cut off a significant portion of the field of view and the image becomes distorted

yKK9PMC.jpg


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At maximum magnification, this is less of a problem,
but the reticle gets blurry towards the edges of the field of view

lx1IAod.jpg
 
So here's an update to this one.

Great kudos to the folks at Gravel Agency who sent me a return label, RMA number, and when I finally got off my butt to send it to them, they very promptly sent me a brand new one.

Unfortunately, the new scope has the exact same problem.

I can only conclude that it's a design flaw in the scope. I have requested Gravel Agency if they would permit me credit towards a completely different scope. I'll update when I find out the answer to that.

My advice: if you want to use a Primary Arms GLX 6-24 scope, it cannot be used on a 20moa rail. It simply won't work, at the upper and lower edges of the elevation range, when you dial it, the scope shadow makes it unusable at the lower magnifications. Out of the entire elevation adjustment range, maybe only the middle 8 mils are useable. Once it's on a canted 20 MOA (or 6 mil) rail it's unusable.

I own a Primary Arms PLX 6-30 that doesn't have this problem, and I own one of the old school 3-18 Primary Arms scopes that also doesn't have this problem.

Maybe if you get an ACSS reticle where you never touch the elevation dial and just use the reticle for holdovers, it might have some limited utility. I urge any shooter interested a longer range applications to avoid the GLX series.
 
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