JP Adjustable Gas System for AR type rifles.
A2/M4 front sight assembly replaces existing pin-on assemblies and provides a gas adjustment. May also be used as front sight only to extend the sight radius of any existing carbine or rifle.
Material: 416 stainless
Finish: Black oxide
Height: 3.400″(overall), 2.600″(over bore)
Attachment: 10-32×1/2″ socket head screws, 5/32 hex drive
(includes 5/64×5/16 roll pin for gas tube installation)
Adjustment: 8-32×1/4″ stainless set screw, 5/64 hex drive (hex key included)
** Note: this Front Sight Base is for a .750 barrel O.D.**