TACFUN .223 556 AR A1 A2 CARBINE DUAL FRONT SIGHT ADJUSTMENT TOOL with 4 & 5 Prong This is Front Sight Adjust tool for AR 4 / 15 rifles and like Style sights. This tool has dual ends to work with both 4 and 5 prong front sights ( A1 / A2 Style ) Very well made solid Steel construction. Makes adjusting front sight post quick and easy. For Adjustment of 5-Prong A1 or 4-Prong A2 Front Sights One Piece Precision Machined Steel Part Patterned Surface for Easy and Friendly Use Easy Precision Elevation Adjustments for Standard 4-Prong and 5-Prong Front Posts Enhancing Shooting Accuracy