Good quality, not reliable so far - Stormlake Pistol Barrel for SLK Conversion Barrel Glock 30/30SF .45ACP-to-10mm 3.78 Inch Stainless Steel 34057S

First magazine worked good, then started having failures to extract. A couple every magazine...Made an adjustment to extractor that I read about on the internet that had you filing on the extractor to get more of a bite on the cartridge, and will try it out later.