Kila Instinct™ patent pending magnetic ball detent technology replaces stock rubber nub or spring style detents. Kit uses stock covers and includes two Kila Instinct™ magnetic piston return power packs (Left and right side) and two Kila Ultra-Life™ magnetic ball-detent pistons. The Ultra-Life™ magnetic ball-detent pistons feature a proprietary blend of self lubricating polymers that provide ultra low friction force properties for extreme durability and wear resistance. Kila detents are easy on even the most fragile paint and feature adjustable force control, lightning-fast return speeds for optimized in breech ball-control, reduced barrel breaks and overall increased marker consistency and performance. Return magnetic piston power packs available in black and high-visibility orange. Select gun model and power pack color from drop down lists. Made in USA.