A set of front and rear sights that is compatible with your average 20mm picatinny top rails, the AMA MBUS Gen 1 Back-Up Sight Set is a great choice when looking for a quick fix to replace your rifle's original sights or a welcome upgrade when your rifle has none. The highly durable polymer construction is resistant to the elements and the terrain while maneuvering throughout the battlefield with the rear sights able to be adjusted as well. These flip sights are made to standard and are very resistant to wear, giving you more use for optimal longevity. An LPEG or spring gun with sights can be upgraded to better hone in on targets or enemies from close to mid-range. The AMA MBUS Gen 1 Back-Up Sight Set is a very affordable way to replace your sights or upgrade your rifle.