I picked up a lightly used G26.5 last night. It appears to be an early one, as it does not have front serrations or the breech face cut. It came with some aftermarket controls that I don't care for so I put it back to it's stock configuration. The magazines have been altered so I only have one stock OEM magazine with the flat floorplate. It also came with three Magpul mags. I had no problem with any of the magazines in the first 100 rounds. Still, I will be ordering some unaltered factory mags.
Seems to shoot fine. This was 50 rounds of 115 AE on the head, 50 rounds of 147 AE on the lower A. 7 yards. I can't see iron sights indoors worth a crap, so it was a matter of aligning a bunch of fuzzy bumps and pressing the trigger clean. Still felt pretty easy. If I could see I might be able to tighten the group a bit.
The rear sight is way off to the left in the dovetail. It shows on the target.
Leading this thread further off topic, I've tried about every solution to the "I'm really near-sighted, have a ton of correction, and can't see anything on top of the pistol through my corrective lenses but fuzzy blobs" problem.
These include:
Flip-down corrective lenses (available inexpensively at fly fishing shops), and just one of those (removing the other) on the master eye.
Master eye only lens corrected to front sight sharpness (entire lens and just top half).
Stick-on "readers".
Various iron combos, the best (although not good enough for me) is a fiber optic front combined with a wider rear notch. Of course, that's only good in daylight.
Others . . .
The only solution I've found that really works is a red dot. I can use my regular prescription lenses, the dot is sharp, the target is sharp (that being relative, as even with the "best" correction, age is taking its toll), my brain doesn't have to make my eyes focus on the front sight. It's the best of a not-too-good situation, and the greater the distance, the more apparent the benefits.
Oh, and a wider window helps, for me at least (e.g., SRO vs. RMR).