JP A2/M4 Front Sight Assembly Adjustable Gas Block .750" Bore, Clamp-on Design, AR-15

JP Adjustable Gas System The JPGS-2FS is an A2/M4 front sight assembly that replaces existing pin-on assemblies and provides a gas adjustment. This unit can also be used as a front sight only to extend the sight radius of any existing carbine or rifle. Full coverage around gas port providing improved seal and better heat dissipation True clamp-on design with two positive clamping screws Easy to access side gas adjustment Specifications: Barrel Diameter: .750" Finish: QPQ Weight: 3.9oz Material: 416 stainless Weight: 3.9oz Length: 1.870" Height: 3.400" (overall), 2.650" (over bore) Width: .870" Attachment: 10-32 x 1/2" socket head screws, 5/32 hex drive (includes 5/64" x 5/16" roll pin for gas tube installation) Adjustment: 8-32 x 1/4" stainless set screw, 5/64 hex drive (hex key included)