The summary is:
The text is a transcript of a video where two men named Matt demonstrate how different guns can penetrate a heavy bag used for martial arts training. They also show off some of their unique firearms, such as a pump-action 308 rifle, a guitar-shaped 556 rifle, and a 50 BMG Barrett with a suppressor. The video is sponsored by Honey, a browser extension that finds coupon codes for online shopping. The video starts and ends with a parody of an exercise promo CD, where the men pretend to fight and train with the heavy bag.
Here are the key facts extracted from the text:
1. The text is a transcript of a video by Matt and Matt, who are testing the bullet resistance of a heavy bag.
2. The video is sponsored by Honey, a free tool that finds coupon codes for online shopping.
3. The video features various guns and ammunition, such as a Luger, a Thompson contender, a pump-action 308, a 500 Magnum, and a 50 BMG.
4. The video also shows a guitar that is chambered in 5.56 and can shoot bullets.
5. The heavy bag stops most of the pistol and shotgun rounds, but not the rifle rounds or the 500 Magnum.