P Adjustable Gas System – The JPGS-9D is our minimized small bore design intended to mount underneath many hand guard models on the market. Its two-piece design allows for easier installations even on barrels with pin-and-weld muzzle treatments. – This model features our new click-adjustable detent system for precise adjustments and secure retention of your gas screw. Never lose you gas setting or screw. – Features: – Click-adjustable detent system for repeatable setup and secure retention of gas setting – Six clicks per rotation of gas screw for finer adjustments – Split yoke design for easy installation even on pin-and-weld barrels – Easy to access side gas adjustment – Internally retained detent components means no lost parts – American made – Specifications: – Material: 416 stainless – Finish: Black – Weight: 2.37 oz. – Length: 1.28 – Height: 1.23 (overall) .78 (over bore) – Width: 1.16 – Attachment: 6-32 x 3/8 socket head screws T15 Torx drive (included) – (includes 5/64 x 5/16 roll pin for gas tube installation) – Adjustment: 8-32 set screw 5/64 hex drive (included)