UTG Model 15 4 and 5 Prong Dual Front Sight Tool, Black - SCP-A1245-A.pNew Gen UTG 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.