Blade-Tech"s proprietary blend (secret formula) of polymers will provide you with a lifetime of performance. The secret formula holds up in extreme heat and doesn"t become fragile in low temperatures. When your magazine is inserted into your pouch you will have positive retention peace of mind knowing you mag is secure. Retention screws can be tightened or loosened to your personal preference. TEK-LOK mag pouches have a low profile for easy indexing and faster reloads. Secure one to your belt today includes the easy fitting and innovative Positive Latching System "TEK-LOK".