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Harris Tactical
https://www.facebook.com/officialharristactical?hc_location=stream

My friend tested a plate from infidel body armor and XM193 penetrated the plate that it was "rated" to stop.

Instead of Infidel requesting the plate back to investigate why it was penetrated, they would rather sit and deny it, calling it a "rumor."
How can you have a rumor that was on video?

Recommendation: know your armor and stay 1000 ft away from this Company and Armor.

Part 1:



Part 2:



This is the rebuttal video from Infidel:

There WAS a rebuttal video on YouTube, but the Infidel Armor company took it down.  Hmmmmm..................

The company does have a point. The two videos do not show the full videos from start to end. They edited the video to make it short. They could have swaped the plates or used armor piercing rounds or something. They need to show the bullet and loading it. Then shoot and walk up to the armor. Take the plates out and show it.

Agreed.
It's not a complete video and I came in too late to see the rebuttal video (removed) but I have questions.

    They say the XM855 did not penetrate but the XM193 did.
The XM193 is a jacketed lead ball and may have a bit more velocity out the barrel than the XM855, but the latter has a steel core.
Of course distance from target does play a factor but I would assume the steel core round would still be more likely to penetrate than the jacketed lead ball. 

If I require correction or explanation, please feel free. 

They say the XM855 did not penetrate but the XM193 did.
The XM193 is a jacketed lead ball and may have a bit more velocity out the barrel than the XM855, but the latter has a steel core.
Of course distance from target does play a factor but I would assume the steel core round would still be more likely to penetrate than the jacketed lead ball. 

Generally speaking, the way to defeat ceramics and aramid fibers is with projectile shape and hardness, while the way to defeat steel armor is with velocity. 55 grain XM193 is faster than 62 grain M855, and is widely known to be more damaging to AR500 targets than M855.