Same function. Less compromise. The Deluxe Vertical Grip gives you a solid, low-profile control point, now built from precision machined aluminum for added strength and durability. It mounts directly to Q-Sert(TM) and provides improved control, better handling, and a more consistent interface when you're running the gun hard. No extra bulk, no oversized grip, just enough where it counts. If the polymer version works, this just does it better. SPECS: Mounting System: Q-Sert(TM) Material: Precision machined aluminum Profile: Low-profile, lightweight design Function: Vertical grip for improved control and handling Use: Rifle control, recoil management, range, and field use