Turns out they won't deflect bullets.
I was excited to test out the new Surefire MAG5-60 quadstack magazine in the SCAR with an inaugural sixty round mag dump.
But that feeling quickly changed to disappointment after I couldn't cycle more than three to four rounds at a time.
All of the malfunctions were Failure to Feed.
The rounds would get hung up on the feed ramps and pretty mangled in the process.
That disappointment didn't take long to turn into frustration. So I decided there must be a better use for this magazine: target practice of course!
I've seen both Chen Lee and Travis Haley running the Surefire mags in the SCAR with out issue, it's entirely possible this was an isolated incident. Regardless, I won't be using these magazines again any time soon.