You can find the Agency Arms Mid Line Threaded Barrel for Glock 43/43X Titanium Nitride here.
The Agency Arms Mid Line Match Grade Fluted Threaded Barrels provide uncompromised performance and unrivaled appearance. The Mid Line focuses on additional machining enhancements and appearance while only a having modest price increase over the Standard Line models. Made from 416R Stainless Steel, pulled broached rifling with a 1:10 twist.
Firearm: Glock 43/43X
Finish: Titanium Nitride
Threads: 1/2x28