1/2" - 9/16" Conversion Adapters

Convert your 5/8-24 RH .308, 300 BO, and .30 calibre Muzzle Devices, shrouds and accessories to your newer Ruger .308 barrel threads (confirm your barrel threads first. Not all Ruger .308's are threaded 1/2-24 RH) with this one-of-a-kind 1/2-24 to 5/8-24...

Convert your .308, 300 BO, and .30 calibre Muzzle Devices, shrouds and accessories to your .223 (5.56), 9mm, or .22 with this 1/2-28 to 5/8-24 thread adapter! Made out of black oxidized steel, this is the perfect solution for this specific accessory...

Convert your .223 (5.56), 9mm, or .22 accessories to .578-28 RH with this premium thread adapter! Made out of black oxidized steel, this is the perfect solution for this specific accessory adaptation!   Inner Threads: 1/2-28 RH Outer Threads: ...

Convert your .223 (5.56), 9mm, or .22 accessories to .578-28 RH with this premium thread adapter! Made out of black oxidized steel, this is the perfect solution for this specific accessory adaptation!   Inner Threads: 1/2-28 RH Outer Threads: ...

Extend your internal 3/8"-24 RH barrel threads to 1/2-28 RH for mounting standard .22 accessories such as flash hiders, Muzzle Devices, supressors, or cleaning adapters. This high quality adapter features a durable black oxide steel construction and...

Convert your standard M1A to common 5/8-24 RH for the use of Muzzle Devices and other popular .308 accessories . This adapter is made out of high grade black oxidized steel and features two wrench flats on each side for easy installation.   Inner...

Convert your .308, 300 BO, and .30 caliber Muzzle Devices, shrouds and accessories to your .223 (5.56), 9mm, or .22 with this 1/2-28 to 5/8-24 thread adapter! Made out of black oxidized steel, this is the perfect solution for this specific accessory...