It would be an understatement to say that the mobile device screen protector market is saturated. So it comes as no surprise when some manufacturers come up with extravagant claims such as having the Holy Grail of screen protectors.

How much of these claims actually hold water?

Technology writer Lee Hutchinson normally doesn’t bother reviewing screen protectors but he found it pretty hard to resist an invitation to look at Sir Lancelot’s Amour Holy Grail screen protector, which the company touts as being made out of bulletproof glass.

Sir Lancelot manufactures thin clear glass screen protectors for mobile devices such as various models of Apple iPhones and iPads, BlackBerry handsets as well as smart phones from HTC, Samsung, Nokia, Motorola and LG. The protectors cost around $10 to $39.

At this point it’s important to note that while the Web site of Sir Lancelot’s Armour does show a close up image of a revolver and an iPhone screen with the message “Siri you’re about to get shot,” the Seattle-based company makes it clear that although its products made of bulletproof glass its screen protectors are not actually bulletproof.

That disclaimer did not deter Hutchinson.

“Of course, I couldn’t let a ‘bulletproof’ claim stand without a challenge,” Hutchinson wrote in his article for the online technology publication Ars Technica.

He tried out a number of implements such as a key, hammer, staple gun and even ran over the Holy Grail with a car before finally taking it to the shooting range.

Perhaps these video clips would better describe what happened at Hutchinson’s home…and the firing range.