The choice of threads is best selected according to the calibre so there is sufficient meat at the muzzle. The common sizes are: .22/223 - 1/2"x20 TPI (UNF) and 1/2"x28 (UNEF, AR15 etc). .243/6mm -...
Type: Posts; User: gundoc
The choice of threads is best selected according to the calibre so there is sufficient meat at the muzzle. The common sizes are: .22/223 - 1/2"x20 TPI (UNF) and 1/2"x28 (UNEF, AR15 etc). .243/6mm -...