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)