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New and Improved!! Patent Pending Kila Dirty TM Bolt V2 technology includes: 1- piece inner thrust core with reverse scooped air inlet for smooth, kick-free operation, improved accuracy through consistant shot to shot velocity and muffled sound signature. Soft centered inner core provides optimized ball-in-breech location for centered feedstack and seemless feeding. Detent slots designed to work in perfect harmony with Kila Instinct TM Ego/Etek magnetic detent systems and stock rubber nubs. Finished off with new Kila magnetic locking pin, hot new cut and Kila jewel sticker. MAP: $54.95