Burris 200437 MTAC 1-4 x 24 Illuminated Scope (Black) Covered under warranty for life Made using the highest quality materials Tested for complete quality and reliability Main Tube Diameter: 30mm 100 feet at 100 yards (low) to 32 feet at 100 yards (high) field of view 24 millimeters (low) to 6 millimeters (high) exit pupil 130-Inch at 100 yards maximum adjust 11.3-Inch long Weighs 17 ounces