UD DOUBLE THUMB REST GRIP The UD Double Thumb Rest Grip is designed and built for consistent accuracy. The wrist is naturally aligned with the mostly upright grip angle. Thumb Rests are provided on each side to support all shooting situations. The index finger is held away from the receiver to achieve perfectly aligned straight back pressure to the trigger. SPECIFICATIONS: Height to Receiver: 4" Weight: 2.1 oz Max Grip Thickness: 1.25" Materials: ASA Thermoplastic Finish: Cerakote Compatibility: Ultradyne UD Chassis Mfg: Ultradyne Usa