ACE Skeleton Stock KIT - ARFX.  The ARFX is 3.6 oz lighter than the A2 stock, while still retaining high strength and durability. A closed-cell foam "overtube" provides a super comfortable cheek weld, and it insulates the shooter's face from vibration and temperature extremes.  The ARFX also sports three sling positions: right and left behind the receiver and one at the toe of the butt..  Includes .5" thick rubber "over-mold" recoil pad.  Kit includes rifle receiver extension, rifle buffer, and rifle buffer spring.