Sons of Liberty Gun Works AR-15 Liberty Fighting Precision .223 Wylde Threaded AR Barrel 14.5 inch SPR Mid Length 1-7 Twist 5/8x24 Phosphate Black. Optimized for accuracy the SPR contour and 5/8x24 threads at the muzzle are routinely shooting 1/2MOA groups with multiple types of ammo. These barrels are delivering match-winning performance across multiple precision gas-gun series. Specifications for Sons of Liberty Gun Works AR-15 Liberty Fighting Precision .223 Wylde Threaded AR Barrel: Manufacturer: Sons of Liberty Gun Works Color: Black Finish: Phosphate Fabric/Material: 416R Stainless Steel Caliber: .223 Wylde Barrel Profile: SPR Barrel Twist Rate: 1-7 Gun Make: AR Platform Gun Model: AR-15 Condition: New Gun Type: Rifle Firearms Threads Per Inch: 5/8x24 Projectile Caliber: .223 Caliber Package Contents: Sons of Liberty Gun Works AR-15 Liberty Fighting Precision .223 Wylde Threaded AR Barrel What firearm models does the manufacturer say Sons of Liberty Gun Works AR-15 Liberty Fighting Precision .223 Wylde Threaded AR Barrel is compatible with? The manufacturer suggests that Sons of Liberty Gun Works AR-15 Liberty Fighting Precision .223 Wylde Threaded AR Barrel is compatible with AR-15Sons of Liberty Gun Works 14.5Precision-SPR-223: AR-15 Liberty Fighting Precision .223 Wylde Threaded AR Barrel 14.5 inch SPR Mid Length 1-7 Twist 5/8x24 Phosphate Black