I've got a G34 in 9mm and it's my go-to CQB and /or training platform.
I love my SIG P226 and my STI 9mm Spartan 1911 single stack, they have their merits too, but let's focus on why my G34 is with me at CQB matches and while instructing on the range...
Light to carry - while working on the firing line all day long, this pistol on the vest , waist , or tactical thigh rig is not heavy like my 1911 STI single stack
No worries - I spend lots of time organizing targetry in the backstop/pits/butts surrounded by cement walls/structures so scratches and bumps against the cement do not cause me to fret.
No Sharp edges -
in a hurry to draw and rack the slide (how the CF soldiers do things), the edges are smooth and kind to my softie 'teacher' hands
Gen4 grip - No more handling the Glocks like a two by four... nice and smooth , small and adjustable backstraps. Life is good. My wife who also likes the 1911 grip, loves the Gen4 grip, too.
Reliable without any maintenance- often I am in a hurry to get home, unpack and get fed when my wife calls me, so the 1911's get oiled right away and then stored without cleaning (until the mid week). The Glock hardly needs lube but
being a good PPCLI Infantryman of yesteryear, I'm trained to add oil ANYWAYS, but I do it sparingly on the disconnector, as the Glock manual / instructions suggest
Parts, magazines, upgrades - All over the place in Brownells, Glockstore, USA, Canada, almost everywhere. No complaints here.
Advice galore - many experts all around me, so willing to share, much experience to capitalize on
Don't get me wrong, I still love my 1911's as my go-to target range pistol, but the Glock magazines remain in my TacVest mag pouches!
Cheers,
Barney