In my original First Shots video with the Beretta ARX100 I mentioned that the gun didn't work with Gen 3 PMAGs. That set-off a bit of a firestorm in the comments and I wanted to clear the air on what mags do work and what mags do not.
Making an M16A4 Clone Rifle
CZ P-09 Duty
Mrsgunsngear's Best Present Ever! Wilson Combat CQB Tactical LE
SA80 History: XL70 Series Final Prototypes (IW and LSW)
Review of the Colt Combat Unit LE6960 and Trijicon VCOG