Sight precision does not necessarily equal greater accuracy, however.
It is common knowledge that the shorter barrel Glocks typically exhibit greater accuracy than their big brothers.
Here is an interesting observation on that from Massad Ayoob...
https://dailycaller.com/2013/03/07/massad-ayoob-combat-handguns-vs-snubbies/
"When the “baby Glocks” came out in the mid-1990s, shooters noticed that they were remarkably accurate for their size, indeed, often more accurate than their big brothers. My two came out of the first production run for a gun magazine article, and I liked them so much I bought them both when the test was over. My 9mm Glock 26 subcompact averaged around 2.5″ for five shots off the bench at 25 yards, a little better than my full size Glock 17 in the same caliber. My .40 S&W Glock 27 once gave me a 1.5″, 5-shot group with 155-grain Winchester Silvertips, distinctly tighter than any load ever did in my full-size .40 S&W Glock 22. It was theorized the double-captive recoil spring Glock put into these super-small pistols (and would much later install in all the Gen4 guns) was holding the barrel locked more uniformly before the bullet departed the muzzle.
I usually shot the bigger Glocks when I chose the brand in competition, just because I thought they’d be faster since they fit my hand better and had a longer sight radius. I began to question that when I won a couple of matches with the G30, a “police shoot” and an IDPA match shooting against full-size 1911 .45s in the Custom Defense Pistol division, and won an IDPA Stock Service Pistol division event with a Glock 26 that I shot just for the hell of it. And then I saw an interesting phenomenon in GSSF."
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