Danny took the gun and instantly noticed that the center of the gravity had changed. The gun was, overall, heavier than a regular rifle. Apart from the second tube installed to the barrel, this new gun looked no different than an ordinary bolt rifle used by most of the soldiers in the Gun Battalion, although it was not as well-made as his own high-precision rifle. The biggest change was that this additional metal tube ran all the way to the bottom of the barrel and was connected to the bolt.
This must be the reason that the gun could keep up a steady fire.
Danny took the aim and pulled the triggered. However, instead of locking his eyes on the muzzle, he gazed at the iron tube on one side of the barrel.
