Tacfire's tactical red dot features a shock-resistant 6061-t6 aluminum housing with multi-coated lens and a dual illuminated red/green dot reticle.It comes with removable flip-up lens covers and a cantilever mount with thumbscrew and quick attachment rail compatible with 20mm picatinny or weaver style rails.This model has a 1x magnification with a 30mm objective and a black finish.Magnification: 1xObjective: 30mmEye Relief: UnlimitedTube Diameter: 30mmLength: 5.25"Weight: 9.70 ozFinish: Black AnodizedReticle: Dual Illuminated Red/Green DotProofs: ShockproofOptic Coating: Multi-Coated