UTG Model 4/15 4-Prong Dual Front Sight Tool
New Gen UTG AR-15 Front Sight Combo Tool to Adjust Elevation of Either 4-prong or 5-prong Front Sight Post by Engaging Locking Detent and Rotating the Sight Post Upward/Downward.  Ergonomic Design and Easy to Grip, Making Sight Adjustment on A1/A2 a Snap