BESTSCOPE 4X Magnifier Optic Scope with Folding lid to Side 21mm Mount Picatinny Weaver Rail, Quick Detach FTS Suitable for Reflection and Holographic Red Dot Sight

• Panoramic View: The 4X Magnifier is a panoramic view designed for hunting/shooting, as well as greater flexibility and performance (only with magnification and no aiming).
• Most Common Dot Sight Combination, Innovative Flip-to-Side Mechanism for Quick Transition between 1X and 4X Image.Objective
• Broadband Multi-coated Lens to Provide Crystal Clear 4X Image, Compatible 20mm rail.
• Adjustable Eyepiece for Easy Dioptric Correction,adjusting the direction of the baseThe range can be turned left/right. Combined with a red dot, the magnifying glass flips quickly and easily to the side so you can see the target better.

4x magnifier Length: 12.1cm Objective lens: 39.cm Eyepiece: 3.5cm Weight: about 0.5kg It can increase the magnification with the same height of the optical mirror, rifecope, red dot. Eg:4x+m2 There are also some product combinations with 55, but due to the different heights, the multiplier effect is not very good, only the part can be displayed. If you have the right gasket in your hand (increasing the height of the gasket) then you can combine it with 55, saving you money (HHS=4X+55)