Barrel Thread Guides /

Barrel Thread Guides

Barrel Thread Specifications for mounting Surefire muzzle devices and suppressors.

Thread SpecsMajor ØPitch ØMinor Ø
1/2-28 UNEF-2A (MODIFIED).4989 / .4924.4757 / .4737 (MOD).4563 MAXDownload Barrel Thread Guide
5/8-24 UNEF-2A (MODIFIED).6238 / .6166.5967 / .5947 (MOD).5742 MAXDownload Barrel Thread Guide
3/4-24 UNS (MODIFIED).7488 / .7419.7217 / .7197 (MOD).6992 MAXDownload Barrel Thread Guide