With one of the most advanced barrels out there, you probably assume there is a secret to the formula.There is no secret to this process. Only honest, American Machining.We gun drill each barrel individually with proper bearing honing guides, back-taper and nose geometry drills that guarantee a straight, true precision hole, part after part.Even after using the honing pads on the gundrill, we use a roller burnishing process that smooths the highs into the lows for a work hardened 8 micron finish. Employing innovative technologies to ensure the integrity of each product before it leaves our shop is the core of Live Free Armory's manufacturing.Chambered in 9mm and compatible with the Glock 17 Gen 1-3 only.May or may not come with the LFA logo.