4UAD Friction Pro Bucking & Nub

The all new Friction Pro Hop Bucking by 4UAD Industries  Applicable for virtually all FPS Velocities and BB Weights  Compatible with standard AEG hopups and barrels Designed to create perfectly centered axis of spin for ultimate consistency Unique contour of the contact patch allows the lift of heavier BBs up to 0.48g Minimized contact surface to eliminate error Flat, consistent and accurate trajectory! Improve accuracy, range, and groupings Designed to achieve ultimate consistency, the Friction Pro hop-up bucking focuses on creating a perfectly centered axis of spin in every shot. While based on a rather traditional single-point design, the unique contour of the contact patch generates enough friction to even lift heavy BBs up to 0.48 grams, while minimizing contact surface to ensure there's no room for error. Resulting in a flat, consistent, and accurate trajectory! - 4UAD