We have used many True Precision barrels on our R&D handguns over the years and have seen nothing short of quality. We have added these to our collection of top tier products we recommend to customers searching for the best products in the industry. This barrel is for the Glock 43/43x and it works perfectly with our HC43 compensator. Easy to install drop-in design Compatible with the Glock 43 and 43X Advanced proprietary broach cut design specifically engineered for increased accuracy potential. Broach cut 6 groove rifling allows for all ammo types to be used safely, including cast lead. 100% Designed and manufactured in the USA with USA sourced certified 416R stainless steel. 9mm 1/10RH twist rifling. Special 11 degree competition style target crown for non-threaded versions or 1/2x28 threads with included thread protector on threaded versions. Threaded versions include Viton high heat integral O-ring lock thread protector. Fully supported SAAMI spec chamber. Improved overall fit from OEM with added chamfers, improved radius cuts, and other additions for a better than OEM barrel. Assorted specialty coatings and finishes to choose from. DISCLAIMER: This product is not manufactured, authorized, endorsed,or warranted by GLOCK. GLOCK does not warrant or represent thatthis product is compatible with GLOCK pistols.