The secret sauce of the MOLLE design is the versatile attachment system for the modular pouches: PALS, or pouch attachment ladder system.
MOLLE: The Modern Tactical Load Carrying System
Molle System Accessories, Gun Sling Vest Carrier
MOLLE NSN List Reference – Gear Illustration
Load Bearing Tactical Vest
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The History of MOLLE system
Load Bearing Tactical Vest
Modular Lightweight Load-carrying Equipment II - CIE Hub
MOLLE - Wikipedia