The FCPC Mini Cobra Buckle sold separately to add to your FCPC V5 to have both shoulder straps quick detach.
FCPC Mini Cobra Buckle – FERRO CONCEPTS
A&A Tactical, LLC Quick Release Kit (Cobra Buckle) for Crye Precision
Kamizelka taktyczna FCPC V5 Base - Multicam - Medium - MEX ARMORY
Ferro Concepts 3AC Cobra Buckle Kit
Ferro Concepts FCPC Mini Cobra Buckle(FCPC両サイドCOBRA化パーツ)
Belts & Suspenders - 911supply
Ferro Concepts - FCPC V5 BASE [ MEDIUM ]
Crye Precision™ JPC™ Cobra Buckle Mod – MOS Tactical
ADAPT System – geartles