Leaper - Deluxe Quad-Rail Mount Gas Block Barrel Mount MNT-GBQR04A

Replaces standard gas block and front sight and adds four picatinny rails to attach flashlights, lasers, and other accessories. 
Precision machined from aircraft aluminum. 
Provides regular height gas block rail to attach a front sight. 
Imported. 

Weight: 2.7 ounces
Length: 1.9 inches
Width: 1.6 inches
Height: 1.7 inches
Inside Diameter: .750 inches 

Note: This product is for airsoft use only.