Its Bob Longs new marker, the Onyx. Patent Pending technology from Kila sports adjustable force control, self lubing pistons, and composite covers for less ball breaks and more constistant feeding. Kila's adjustable force control allow you to tweak the amount of force that the detents push into the breech. Magnetic force properties differ from spring tension allowing the system to operate with less force as the ball and bolt pass the detents. Force is built at an exponential rate and return the pistons with lightening fast speed for the best in reliability and consistancy. Available in a large number of colors including Kila Storm-trooper camo, Kila Camo, Olive, Black, Red, Blue, Doo-doo, White, and even clear to show off your internals. Other colors and patterns available upon request. Kit includes 2 eye covers, 2 magnetic pistons and 2 boost magnets. MSRP $39.95
The Kila Products Onyx Magnetic Detents are newer, so they should be commonly available, both new and used.