I always wondered what would happen to a F/A w/a squib. I never suffered one w/my MAC 11/9 or HK MP5, but I would have thought the damage would have been greater. I only had the factory short barrel on my MAC, but at 1200rpm, or 1800rpm w/the mac-jack, it prob takes someone a 1/2 sec or 2 to recognize something out of the ordinary and come off the trigger.... Came across these pics. The firearm was reported to be a F/A MAC w/a 16" barrel, that suffered a squib and then multiple followup rounds. I can count at least 8 or 9 rounds, but the total count was supposed to be 10rds?? Looks like the barrel did an outstanding job of containing the rounds. Can anyone comnfirm that this looks like a 16" MAC barrel? It looks a little thick to me and do the threads look right?? scottMO Wanna kill these ads? We can help!