We just heard from Magpul that they've added a second window on their EMAG. So, all 1,000 of you in the U.S. using EMAGs in your HK416s can now check your round count from the right AND left side, should you choose. This is an inline change, so all EMAGs going forward are going to have windows on both sides once the single windows are sold out.
The bigger news is that Magpul is shipping 1 million of these updated EMAGs to the Brits to fulfill an Urgent Operational Requirement (UOR) which is the Queens's slang for a UONS. The EMAG was designed to work with foreign made STANAG 4179 rifles such as the UKs bullpup SA80 assault rifles and the HK 416, FN SCAR, Beretta ARX-160, IMI Tavor. While it's optimized for use in foreign arms, it also does just fine in an AR/M16/M4 platform.