Well, it was time for the rifles.

Now, just to get a little technical, rifles, when shot at close range, have what is called "sight-offset", which means they will shoot low due to the sights being higher than the bore.

I tested one shot before taking the shot at the lock.

The sight offset for an AR is about 2 1/2 inches.

It was now time to shoot the lock, and aim 2 1/2 inches higher than the desired impact.

First, an AR shooting XM193 Ball.

The 5.56 went through the lock like a hot knife through butter.

This is the exit on the back of the lock.

The lock was frozen, but still held.

We also tried a round of Remington .223 Soft Point, with the exact same results.

Next, we shot the FAL, with Australian M1A2 Ball.

Here I am busting it.

This is the lock.

I am holding the new lock on the right just to compare.

The .308 blew the bottom half of the lock off.

But, once again, the lock held and did not come off, even when pulled.

I also loaded up a round with a pulled .30 AP bullet and got the same results.