Cody - the pistol does have a threaded barrel,. buds uses stock photos, which sometimes don;t completely represent all the details of the product being offered for sale. This pistol, UPC 845737009601
, jdoes come with threaded barrel and thread protector.

yes it is Threaded with .578x28 threads see *****Specifications and Features:
FNH FNX-45 Tactical Semi Auto Handgun 66-100351
.45 ACP
5.3" Cold Hammer Forged Barrel
*******Threaded .578x28
1:16" Right Hand Twist
15 Rounds
Raised 3-Dot Night Sights
Stainless Steel Slide
External Extractor with Loaded Chamber Indicator
Front and Rear Cocking Serrations
Slide Cut and Threaded for Electronic Red Dot Sights (Sold Separately)
Polymer Frame
MIL-STD-1913 accessory mounting rail
Serrated trigger guard
Fully-ambidextrous decocking/safety levers, slide stop lever, and magazine release
Fitted, soft Cordura nylon case
Owner's manual
Interchangeable backstraps
Overall Height 6.5"
Overall Width 1.58"
Overall Length 7.9"
Overall Weight 33.3oz
Black Slide
Flat Dark Earth Frame