Anarchy Outdoors Thumb Rest Accuracy International AX Model Right Hand Black AI-TR-AX-RH. The thumb rests are manufactured from composite Nylon II material resulting in a strong thin and perfectly textured interface. Please note that the locking stock capture on the folding AX rifles is deleted in order to install the thumb rest. The butt stock will still fold 100percent closed but it will no longer be captured in the plastic retaining piece. AE AW legacy AICS and most fixed stock variants are NOT compatible with the thumb rest. Specifications for Anarchy Outdoors Thumb Rest Accuracy International: Manufacturer: Anarchy Outdoors Color: Black Fabric/Material: Composite Nylon Gun Type: Rifle Features of Anarchy Thumb Rest Accuracy International Dimensions: 2.58" x 1.6" x 0.64" Package Contents: Anarchy Outdoors Thumb Rest Accuracy International Anarchy AI-TR-AX-RH: Accuracy International Thumb Rest AX Model Right Hand Black