carguychris
New member
Although I haven't seen the factory documentation firsthand, it's been widely reported by Glockophiles that "SF" formally stands for "Short Frame", although some factory reps apparently throw around the term "Slim Frame" interchangeably.TxFlyFish said:SF means Special Forces. Glock 20 Special Forces
+1; it should be mentioned that one of the big pluses of the G20/G21 platform is the availability of conversion barrels for just about any commonplace (and reasonably high-powered) auto-pistol cartridge in existence, along with some cool wildcats.ritepath said:Pick up a 40 barrel and shoot factory 40 if you don't reload. And 40 brass is cheap if you want to load up a few thousand rounds in advance compared to 10mm brass.
On a related note... although I don't want to start an extended thread hijack, some people have shot .40S&W out of stock-barreled, unconverted G20's with success, but IMHO this course of action fits under the "Not Necessarily Unsafe, But Not Smart, So I Won't Do It" heading. The cartridge will headspace off the extractor, which may result in extractor damage, which may in turn cause excessive headspace, failures to extract, and/or failures to fire.