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: 3.9 oz.
• Material: 416 stainless
• Weight: 3.9 oz.
• 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)

Installation:

The installation of this gas block requires use of a 6-32 H1 or H2 bottoming tap. If you do not own such a tap, you can add one to your order at right. Click the link to the JPGS-2FS instruction sheet below for more details.