This is a BSA Optics Rifle Scope known as the Sweet 6.5, model 6.5-4.518X40AOWRTB.
The BSA(R) Sweet 6.5 AO Rifle Scope is specifically designed for the 6.5 Creedmoor cartridge. Complete with 3 ballistically calibrated turrets for 120gr" 129gr" and 140 gr cartridges" the Sweet 6.5 AO also features an adjustable objective" fully coated lenses" 30/30 reticle and 2 pc. weaver rings
Features:
MAGNIFICATION LOW: 4.5X
MAGNIFICATION HIGH: 18X
OBJECTIVE LENS DIA. (MM): 40
ADJUSTMENT GRADUATION (MOA): 1/4
LENS COATING: Fully Coated
W/E ADJUSTMENT RANGE: 35
EYE RELIEF (INCHES): 3
ADJUSTABLE OBJECTIVE: Yes
SIDE PARALLAX ADJUSTMENT: No
RETICLE TYPE: 30/30