In the case of optical chronographs, multiple sensors measure a bullet’s velocity as it passes over them; this requires the unit to be set up out in front of the gun’s muzzle, which comes with ...

Its 8.3” barrel is cold hammer-forged and has an HK53-style four-prong flash hider on its muzzle ... are supplied with each pistol. The AP53 has an overall length of 22.3”, weighs 7.2 lbs., ...