JP Adjustable Gas Block System for AR-type rifles.

• Low profile, rail-free design allows installation under handguards.
• Material: 416 stainless steel
• Finish: Black oxide
• Weight: 2.25oz
• Length: 1.28"
• Height: 1.40"overall, .775"over bore
• Width: .85"
• Attachment: 6-32x1/2" socket head screws, T15 Torx drive included includes 5/64x5/16 roll pin for gas tube installation
• Adjustment: 8-32x3/8" stainless set screw, 5/64 hex drive included