Read First Before Buy NcStar 4X20 Compact Scope SCA420B
4x20 = 4X magnification x 20mm diameter objective lens (the end closest to the target).
Included rings mount to 3/8" "Dovetail" grooves on .22 caliber rifles. Owners manual should list what kind of ring mount (base) is on the rifle or air gun you want to put a scope on. There are bases and rings made for just about every combination possible. And conversion bases to change from one type to another. At the ranges possible with an air gun 4X is sufficient. The higher the magnification the smaller the area (field of view) that you can see thru the scope. For comparison, 4X is used extensively by deer hunters in wooded situations, and some consider that too high. For moving targets and less than 100 yard ranges 4X will work great.
Also Nitrogen filled prevents internal fogging, and is a feature usually used on much more expensive scopes.
the rear sight on my crosman is missin... i would like to know of any good sights to replace it. i dont wanna spend tons of money. thank you
BalasHapus