At Digital Journal, they have a video of the police at the Newtown shooting scene when they discover the long gun which they discovered in Adam Lanza’s car. That’s not a Bushmaster or an AR-15-style weapon that the officer clears.
I also don’t see the officer removing a magazine before he clears it. The weapon looks like a tube-fed shotgun sorta maybe, but it’s certainly not an AR-15 or a Bushmaster. The bolt on an AR is charged from the rear of the upper receiver, not on the side like the officer appears to be doing. The cartridge that ejects from the gun looks too large to be rifle ammo. Again, to me it looks like a shotgun.
But, seein’s how now one wants to show us the actual weapons that were used, we can only speculate. And, I guess Lanza could have had another long gun in the school, but why are we being kept in the dark while politicians are charging ahead blindly with their rhetoric and legislation?