Ultradyne C4 Flip-Up Front Sight Picatinny Mount Black UD10440. Using the C4 Front Sight in conjunction with the C4 Rear Sight creates a perfectly concentric circle-within-circle sight picture that allows the shooter to see the target not cover it...
Ultradyne C4 Flip-Up Front Sight Picatinny Mount Black UD10440. Using the C4 Front Sight in conjunction with the C4 Rear Sight creates a perfectly concentric circle-within-circle sight picture that allows the shooter to see the target not cover it...