Developed to function as the ideal riflescope for any person who is in need of exceptional improvements for their rifles, Bosma 4-12x40/4-16x50/6-18x50 Riflescope w/ Adjustable Objective ends people’s wait for that riflescope. This riflescope is housed in an extremely durable 1 inch one-piece main tube that is compatible with most base, rings and mounts.