Can I change parts with serial number on it?

[LouisArnold]

I wanna build and customize some of my guns but the parts I'd like to change have a serial number or microstamping on it. My barrel is micro stamped and my slide is serialized. (Not sure about my trigger) I bought this pistol when I lived in California. Wondering about my rifle as well.

[BKinzey]

Please post a pic of the micro stamp on the barrel because I don't believe it.

Doesn't matter what is stamped on the slide or the barrel, it's what's on the frame, in the case of Sig if it has a Fire Control Unit (FCU) like the P365 or 320, it's on the FCU. So swap those parts as you wish.

Uh, a pistol and a rifle question? Welcome to the Remington 870 Shotgun Forum.