The 552 is eotech's most affordable night vision-compatible sight and it partners with most night vision-devices.The 552 is designed to increase your speed to target even after the sun goes down.Features 20 daylight setting and 10 additional settings for gen i-iii+ night vision devices.*note- the xr308 reticle was designed specifically for the military m240 machine gun.It should be used with.308 cal with 150 gr m59 fmj at roughly 2 800 fps with a 24.8" barrel.Battery: AA (2)Magnification: 1xObjective: 30x23mmField Of View: 30 yds @ 4" Eye ReliefEye Relief: UnlimitedDot Size: 1 MOALength: 5.60"Weight: 11.50 ozFinish: BlackReticle: XR308Adjustment Size: .5" @ 100 ydsProofs: Water ResistantOptic Coating: Anti-GlareWindage Elevation: 40 MOA