I have three Glocks: a 30SF, a 21SF, and a 17. The 30SF came with a serrated trigger which I didn’t like (it cause discomfort for my trigger finger) so I replaced the trigger bar with a 21SF trigger bar which is smooth faced. Likewise the 17 trigger is smooth faced. I’ve been trying to figure out why some Glocks come with serrated triggers while others come with smooth triggers. It seemed rather random (being I only have three guns to obtain data from). Well I finally figured this out thanks to a thread on GlockTalk.
When a pistol gets important into the country it needs to get 75 points on the BATFE point system. One of the points is for having a target trigger. A target trigger is a fancy way of saying a serrated trigger apparently. Other points are awarded for things like size, caliber, action, etc.
Compact Glocks don’t have enough points to get important into the country due to their size. In order to make the required points Glock throws a target trigger into their compact guns (they also put adjustable sights on but those are swapped off for fixed ones when they arrive in America). The point system is also the reason for the thumb groves on the grip (that makes it a target grip apparently).
When the Brady Bunch and their minions claim the firearms industry is practically unregulated remember bullshit laws like this.