7mm Prefit Barrels All Actions, Button Rifled - Patriot Valley Arms
TRUE PRECISION Non-Threaded Barrel TP-P365B-XBC
ZEV Technologies New Match-Grade Glock Barrels -The Firearm Blog
Blemished Agency Arms High Polished Premier Line Match Grade Drop-In Barrel (compatible with Glock® 19 Gen 1-4) - Agency Arms | Welcome to the Brotherhood
Zev Technologies Optimized Barrel for Glock 17 Gen 1-4, DLC | NDZ Performance