This button rifled medium profile barrel from Odin Works is chambered for .300 AAC Blackout, with a 1:8" right hand twist and a threaded muzzle with standard 5/8-24 threads. The hand-lapped barrel has M4 feed ramps and is made of 416R stainless steel.

Specifications and Features
Odin Works B-300-16
.300 AAC Blackout
416R stainless steel
Hand lapped
1:8" twist
M4 feed ramps
Muzzle threaded 5/8-24
Overall length 16.5"