The Signature HD version is built with a 30mm nitrogen-filled tube. The scope features a Ballistic E3 Illuminated reticle.
Specifications:

Magnification	5-25x
Objective	50mm
Field of View	4.50 - 22.50 ft @ 100 yds
Eye Relief	3.30" - 3.60"
Tube Diameter	30mm
Length	14.30"
Weight	24 oz
Reticle	Illuminated Ballistic E3
Parallax Adjustment	25 yds-Infinity
Adj Size
Exit Pupil Range
Proofs
Coating Type
Optic Coating
Optic Coating