AR-Stoner Barrel AR-15 223 Remington (Wylde) SDM-R Contour 1 in 8" Twist 20" Fluted Stainless Steel
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This 20" Fluted HBAR Contour Barrel is manufactured from 416R Stainless Steel and uses 5R Rifling with a 1 in 8" Twist. Like the SDM-R Barrel it is based off of, it is fluted along its length under the handguards for greater stiffness, faster cooling and reduced weight. Additional features include a Rifle 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.
- Gas Tube Length: Rifle Length
- Gas Block Diameter: 0.750"
- Muzzle Thread: 1/2"-28
- Muzzle Thread Engagement Length: 0.620" with a tolerance of .005"
- M4 Feed Ramps: Yes
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