My apologies if this is the wrong forum for this.
I’ve only ever owned handguns and am looking to build my first AR. This lower looks like a great deal (trying to save money) but although the caliber says multi caliber the trigger says hammer is compatible with 9mm. Does that mean this is designed for a 9mm AR?
Edit: wow can’t post URL links since I’m a new member. The lower in questioned is the Palmetto State Armory blemished lower for $139