Brownells .223 Cal/5.56x45mm Bore Straightness Gauge

The .223/5.56 bore straightness gauge is an essential tool for identifying barrel defects in both new and used barrels. When applied to a new barrel, this gauge can detect manufacturing defects or irregularities that may have arisen during production. In the case of used barrels, the bore straightness gauge can assess whether the barrel remains in good condition or has sustained damage over time. Additionally, the .223/5.56 bore straightness gauge can verify alignment between the bore and a muzzle device, such as a muzzle brake or suppressor, thereby helping to prevent potential damage to the muzzle device.