Advanced Technology C2102212: TactLite GEN2 Adjustable Rifle Stock M4 Style Weighs Only 6.20Oz TracLOCK GEN2 System Provides Smooth Secure Stock Adjustments. Eliminates Horizontal & Vertical Movement of the Stock on the Buffer Tube. Locks Down Firm with One Lever No Need for Secondary Locking Mechanisms. No Interference with the Charging Handle. X Series Thin Butt-Pad Non-Slip, Removable. Upgrade to an X1 or X2 Recoil Reducing Pad. Less Recoil and Greater Length of Pull. Dual Sided QD Attachment Point Slot for Tactical Sling Attachment