Soldier Systems has some interesting gun related items they noticed at SOFIC(Special Operations Forces Industry Conference)
First is holster for Glock with 6-second mount from Geissele
http://soldiersystems.net/2015/05/20/sofic-2015-raven-concealment-systems/
And SIG Sauer is coming up with QD swivel cup for Picatinny rail
http://soldiersystems.net/2015/05/20/sofic-2015-sig-qd-sling-swivel-cup/
From: Soldier Systems