About Barska Picatinny Offset Rail
The Barska Picatinny Offset Rail is designed to be used on either side of the rail. The mount allows optical accessory to be mounted in the 1 o'clock position (right hand) or the 11 o'clock (left hand). This rail is 1.77" (4.49 cm) in length and can be installed easily with a large thumb lock.