Your barrel or barreled action is loaded into our CNC lathe and the bore carefully aligned with the lathe axis to within .0002".  Our threads are cut to the Unified Class 3A fitment specification and verified with certified ring gauges. The barrel can be re-crowned at this time for an additional charge. The vast majority of barrels will be threaded for 1/2"-28TPI or 5/8"-24TPI, depending on barrel diameter and caliber, however, we can cut any standard inch or metric muzzle thread. All thread tenons are cut to .600" length unless otherwise specified.  Threads are deburred and polished. Threads cut on chromoly barrels will be cold blued to protect against corrosion. Any required disassembly/re-assembly are performed at standard shop rate of $95 per hour.