Six weeks into the murder trial against former NFL star Aaron Hernandez and the prosecution is eager to prove that the defendant is responsible for shooting of his friend Odin Lloyd.

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Last week the prosecution team presented the jury with new surveillance footage that they believe will prove that Hernandez is holding the gun that was used to shoot Lloyd.

Glock sales manager Kyle Aspinwall was called to the stand to testify that the object in the video is a gun.

New Evidence In Aaron Hernandez Murder Trial Proves Prosecutions Argument

On Saturday, CNN reported that Hernandez's attorneys have fired back at prosecutors and are trying to discredit Aspinwall's credentials.

"In my opinion, the firearm shown in the video stills is a Glock pistol," Aspinwall testified last week.

Defense attorney James Sultan says that the object could be a remote control or even a black iPod. The defense team also showed a different part of the video time-stamped a few seconds earlier, and it appears as if the former football player is holding a shiny object in one hand suggesting that it could be an iPad.

"Glock pistols don't have white glows to them, do they?" Sultan asked Aspinwall, and he responded, "No, they do not."

Based on their evidence, the prosecutors have concluded that Hernandez and his two friends, Carlos Ortiz and Ernest Wallace, picked Lloyd up at his home in Boston, drove him to the industrial park, and shot him to death.

Hernandez has pleaded not guilty to the charges surrounding both cases, and he currently remains in the jail without bail.