Yeah, But they are gaining ground
You can get:
Trigger kits or build your trigger from scratch.
Custom Guiderods...Including Tungstun & Stainless...and Laser.
Custom trigger springs
Extended Mag and slide releases
Match grade barrels
Barrel comps.
threaded barrels.
Mag Wells (Yar, Glockmiester make a brass magwell that helps alot with weight dis.)
Grip panels
Grip sleeves
Grip reductions
Grip extentions
Mag extentions
+4-5 extender packs.
pin kits
Titainuim Strykers
Specialized ejectors/extractors
over 14 accessories for the utility rail ranging from Lights , lasers to forward grips.
specialized holsters, and mag carriers.
scope mounts
Sites from every major manufacturer ranging from target to nite sights to fiber optic inserts.
inserts for adding more weight to the grip (Seattle Slug)
Caspian slides
I own 2 1911's A Para and a Kimber and I have more aftermarket stuff for my Glocks than for them. And to think I used to say there is no way you could give me one of those cheap plastic guns!..