This 18" Medium Contour Barrel is manufactured from 416R Stainless Steel and uses 5R Rifling with a 1 in 8" Twist. Additional features include a Mid Length Gas Port, M4 Feed Ramps and 1/2"-28 threaded muzzle. Barrel extension and locator pin are both included and installed at the factory.
- Length: 18"
- Material: 416R Stainless Steel
- Contour: Medium
- Chamber: 223 Wylde
- Twist Rate: 1 in 8"
- Chrome Lined: No
- Finish: Black Teflon
- M4 Feed Ramps: Yes
- Muzzle Thread Pattern: 1/2"-28
- Gas Port Location: Mid
- Exterior Diameter at Gas Port: 0.750"